 | 湯浅 雅賀 （ユアサ マサヨシ）
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Last Updated :2023/11/29
コミュニケーション情報 byコメンテータガイド
コメント
エネルギー技術や環境技術に貢献するための機能性無機材料について研究しています。特に、次世代の大容量蓄電池として注目されている金属空気電池や環境計測用ガスセンサを開発しています。
研究者情報
学位
ホームページURL
科研費研究者番号
- 50404075
ORCID ID
J-Global ID
研究キーワード
- ナノ材料 電池 ナノ粒子合成 無機工業化学 空気電池 放電特性 ナノ粒子 ガスセンサ 半導体 分子認識 電気化学 ガス拡散 酸化スズ 担持 メソマクロポア制御 VOC センサ 酸化タングステン
現在の研究分野（キーワード）
- エネルギー技術や環境技術に貢献するための機能性無機材料について研究しています。特に、次世代の大容量蓄電池として注目されている金属空気電池や環境計測用ガスセンサを開発しています。
研究分野
経歴
- 2018年04月 - 現在 近畿大学 産業理工学部 生物環境化学科Faculty of Humanity-Oriented Science and Engineering, Department of Biological and Environmental Chemistry准教授
- 2016年10月 - 2019年03月 九州工業大学非常勤講師
- 2015年04月 - 2018年03月 近畿大学産業理工学部 生物環境化学科講師
- 2007年04月 - 2015年03月 九州大学大学院総合理工学研究院助教
- 2005年06月 - 2007年03月 九州大学大学院総合理工学研究院助手
学歴
- 2003年04月 - 2005年05月 九州大学 大学院総合理工学府 物質理工学専攻 博士課程
- 2001年04月 - 2003年03月 九州大学 大学院総合理工学府 物質理工学専攻 修士課程
- 1998年04月 - 2001年03月 九州大学 工学部 エネルギー科学科
所属学協会
研究活動情報
論文
- Masayoshi Yuasa; Miu Tanaka; Masayo Shimizu; Mamia YoshidaJournal of The Electrochemical Society 169 064515 2022年06月 [査読有り]
Abstract Nitrogen-doped and sulfur-doped mechanochemically synthesized multilayer graphene (N-doped and S-doped MSMG) were prepared by planetary ball-milling, and they were used in bifunctional gas diffusion electrodes (GDEs) for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Graphite, melamine, and elemental sulfur were used as raw materials. The surface area-normalized linear sweep voltammograms revealed that the N-doped and S-doped MSMG have higher intrinsic ORR/OER activity than the undoped MSMG. When the MSMG samples were used in GDEs, the N-doped and S-doped MSMG showed higher OER activity but lower ORR activity than the undoped MSMG. We analyzed the relationship between the specific surface area, intrinsic ORR/OER activity, and ORR/OER activity of GDEs and found that both the intrinsic ORR activity and surface area are important in the fabrication of GDEs with high ORR activity and that the intrinsic OER activity rather than the surface area is important in the fabrication of GDEs with high OER activity. The GDE fabricated from the S-doped MSMG showed the highest ORR/OER bifunctional activity among the MSMG-based GDEs, and its ORR/OER bifunctional activity was higher than the GDEs fabricated from other materials, such as reduced graphene oxide and electroconductive oxides. - Masayoshi Yuasa; Yuki Koga; Hazuki Ueda; Tomonari ZayasuJournal of Applied Electrochemistry 52 1173 - 1186 2022年04月 [査読有り]
- Masayoshi YuasaCeramics International 48 10 14735 - 14744 2022年04月 [査読有り]
- Masayoshi Yuasa; Miu Tanaka; Masayo Shimizu; Mamia YoshidaJournal of The Electrochemical Society 168 7 070521 2021年07月 [査読有り]
- Masayoshi Yuasa; Yuko Suenaga; Ryushin Nakamura; Kenta Abe; Shunsuke WatanabeJournal of Applied Electrochemistry 49 1055 - 1067 2019年09月 [査読有り]
- Effect of ambient oxygen partial pressure on the hydrogen response of SnO
2 semiconductor gas sensorsKoichi Suematsu; Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeJournal of the Electrochemical Society 166 8 B618 - B622 2019年 [査読有り]
© 2019 The Electrochemical Society. In this study, the influence of the oxygen partial pressures (PO2) on the sensor response to H2 of SnO2 resistive-type gas sensors was evaluated under various humid atmospheres. SnO2 nanoparticles of 8–15 nm in diameter were synthesized using a hydrothermal technique followed by calcination at 600°C. Additionally, a large amount of pores with diameters greater than 10 nm was confirmed in the nanoparticles. The electrical resistance at 350°C was decreased with decreasing the PO2, and the electrical resistance in the presence of 10 ppm H2 was much smaller than that in the absence of H2 in both dry and humid atmospheres regardless of the PO2. Furthermore, the sensor response to 10 ppm H2 at 350°C increased with decreasing PO2 in both dry and humid atmospheres. Thus, decreasing the amount of oxygen adsorption enhanced the effect of rooted hydroxyl formation on the SnO2 surface through a combustion reaction between H2 and adsorbed oxygen and improved the sensor response to H2. These results are important for understanding the fundamental mechanisms of gas detection and for the material surface design of highly sensitive resistive-type semiconductor gas sensors. - Anna Ilnicka; Jerzy P. Lukaszewicz; Kengo Shimanoe; Masayoshi YuasaJournal of Materials Research 33 11 1612 - 1624 2018年06月 [査読有り]
Manufacturing of advanced functional materials should also rely on the green chemistry principles like utilization of natural renewable resources. Marine environment offers plenty of renewable raw materials like chitin and its derivative chitosan. The paper presents how urea treatment has influenced several textural, chemical, and electrocatalytic properties of N-doped activated carbons (N-ACs) obtained from chitosan and chitin. The materials were subjected to an activation procedure (with different activators) as well as nitrogenation by premixing the precursors with water solutions of urea. Raw and premixed precursors were carbonized in the temperature range of 700-800 °C. The urea treatment resulted in a spectacular increase in the nitrogen content by weight (up to 68%) and an improvement of the surface area (up to 42%) along with total/micro-/mezo-pore volume (up to 49%). Some urea-modified N-ACs were capable of reducing oxygen in an alkaline solution as effectively as a Pt-loaded carbon material. The highest number of electrons transferred to O2 molecule was found to be equal to 3.76 for a chitosan derived sample. This ability of chitosan and chitin derived N-rich activated carbons was studied by means of the method named rotating ring disc electrode. - Koichi Suematsu; Nan Ma; Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeSensors (Switzerland) 18 1 2018年01月 [査読有り]
To investigate the effect of aging at 580 °C in wet air (humid aging) on the oxygen adsorption on the surface of SnO2 particles, the electric properties and the sensor response to hydrogen in dry and humid atmospheres for SnO2 resistive-type gas sensors were evaluated. The electric resistance in dry and wet atmospheres at 350 °C was strongly increased by humid aging. From the results of oxygen partial pressure dependence of the electric resistance, the oxygen adsorption equilibrium constants (K1 for O- adsorption, K2 for O2- adsorption) were estimated on the basis of the theoretical model of oxygen adsorption. The K1 and K2 in dry and wet atmospheres at 350 °C were increased by humid aging at 580 °C, indicating an increase in the adsorption amount of both O- and O2-. These results suggest that hydroxyl poisoning on the oxygen adsorption is suppressed by humid aging. The sensor response to hydrogen in dry and wet atmosphere at 350 °C was clearly improved by humid aging. Such an improvement of the sensor response seems to be caused by increasing the oxygen adsorption amount. Thus, the humid aging offers an effective way to improve the sensor response of SnO2 resistive-type gas sensors in dry and wet atmospheres. - Kota Kumamoto; Kenta Tsuchibashi; Azzah Dyah Pramata; Masayoshi Yuasa; Kengo Shimanoe; Tetsuya KidaJOURNAL OF PHYSICAL CHEMISTRY C 121 25 13515 - 13523 2017年06月 [査読有り]
Polyoxometallates (POMs) have been attracting much attention as homogeneous molecular catalysts because of their excellent photocatalytic activities. However, the poor sensitivities of POMs to visible light limit their utilization of solar energy. Here, we studied photoinduced electron transfer (PET) from a Ru complex to POMs such as S1W10O368-, W10O324-, SiW12O404- , and PMo12O403- to use them for photoenergy storage and photocatalysis driven by visible light. A hydrophobic Ru complex ([Ru(nbpy)(3)](2+); nbpy = 4,4'-dinoyl-2,2'-hipyridyl) was coupled with POMs that were hybridized with dioctadecyldimethylammonium (DODA) in chloroform. Photoluminescence (PL,) quenching and lifetime measurements indicate that PET efficiently occurred from the Ru complex to the POMs/DODA hybrids in chloroform by excitation with visible light. The PET led to the formation of one electron reduced POMs that store photoexcited electrons. The stored/charged electrons can be discharged in a subsequent reaction that can proceed under dark conditions. The Ru complex-POM hybrid system in chloroform was used to reduce metal ions in a water phase at a liquid/liquid interface Under visible light irradiation. The one-electron reduced POM that was formed by PET could reduce metal ions to produce metal particles, suggesting the applicability of this system for photocatalytic reactions. under visible light irradiation. - Fritzie Hannah B. Baldovino; Armando T. Quitain; Nathaniel P. Dugos; Susan A. Roces; Michio Koinuma; Masayoshi Yuasa; Tetsuya KidaRSC ADVANCES 7 7 3852 - 3852 2017年 [査読有り]
- Kozo Matsumoto; Miho Kakehashi; Hirotaka Ouchi; Masayoshi Yuasa; Takeshi EndoMACROMOLECULES 49 24 9441 - 9448 2016年12月 [査読有り]
We conducted ring-opening polymerization of silacyclobutane monomers 1-[2-(2,4-dioxa-3-pentanoyl)ethyl]-1-methylsilacyclobutane (SBMC) and 1,1-di[2-(2,4-dioxa-3-pentanoyl)ethyl]silacydobutane (SBDC) to obtain polySBMC and polySBDC, respectively, and measured their ionic conductivity with addition of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) or lithium trifluoromethanesulfonate (LiOTf). The ionic conductivity of both polySBMC and polySBDC increased with the increase in the amount of LiTFSI added. The ionic conductivity of polySBMC decreased with the increase in the amount of LiTOf, and that of polySBDC decreased after an increase. PolySBMC and polySBDC showed ionic conductivity of 6.1 x 10(-5) and 1.5 x 10(-4) S/cm at 3 degrees C, respectively, after the addition of 4 mol equiv of LiTFSI per cyclic carbonate. Differential scanning, calorimetry analysis of the polymer revealed that the polymers with a high LiTFSI content formed a crystalline phase around room temperature, but the glass transition temperatures of the amorphous phases were kept low. Infrared analysis suggested the existence of a strong interaction between carbonate carbonyl groups and lithium cations. - Koichi Suematsu; Nan Ma; Kazuya Kodama; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeMATERIALS LETTERS 179 214 - 216 2016年09月 [査読有り]
Vanadium oxide (V2O5) was successfully loaded on tin dioxide (SnO2) nanoparticles using an impregnation method to improve the sensor response for detecting combustible gases in a humid atmosphere. As seen from field-emission scanning electron microscopy images, appropriate pores for gas diffusion are formed on the nanoparticles. The sensor response to combustible gases such as hydrogen and ethanol were evaluated at elevated temperatures in a humid atmosphere, showing clear improvement with 1 wt% V2O5 loading on the SnO2 nanoparticles. The improvement in performance was attributed to the role of V2O5 as an oxygen provider in the air atmosphere with combustible gas and the ability for V2O5 to undergo reduction. Thus, adding a catalytic metal oxide provides a simple way to overcome hydroxyl poisoning on a SnO2 surface. (C) 2016 Elsevier B.V. All rights reserved. - Satoshi Suehiro; Keisuke Horita; Azzah Dyah Pramata; Masayoshi Yuasa; Yoichi Ishiwata; Kengo Shimanoe; Tetsuya KidaJournal of Asian Ceramic Societies 4 3 319 - 323 2016年09月 [査読有り]
© 2016 The Ceramic Society of Japan and the Korean Ceramic Society ZnO nanocrystals (NCs) were synthesized by heating Zn (II) acetylacetonate in oleic acid/oleylamine in the presence of 1,2-hexadecanediol at 220 °C. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) measurements revealed the formation of monodispersed ZnO NCs of ca. 7 nm. ZnO NC assembled films were fabricated on a glass substrate by deposition with the colloidal ZnO NCs dispersed in toluene. The film composed of the NCs showed good optical transparency in the visible to near-infrared region. A device coupling the ZnO NC film with a p-type Cu 2 ZnSnS 4 (CZTS) NC film exhibited an obvious diode-like current–voltage behavior. The results suggest that the transparent ZnO film has a potentiality to be used for an n-type window layer in some optoelectronic applications. - Masayoshi Yuasa; Koichi Suematsu; Kiyomi Yamada; Ken Watanabe; Tetsuya Kida; Noboru Yamazoe; Kengo ShirnanoeCRYSTAL GROWTH & DESIGN 16 8 4203 - 4208 2016年08月 [査読有り]
In this study, we prepared thermally stable SnO2 nanocrystals (ca. 4 nm) in a mixture of Sncl(4), tetraethylene glycol (TEG), and tetrabutylammonium hydroxide (TBAH) tinder reflux and obtained a highly sensitive semiconductor gas sensor. It has been determined both theoretically and experimentally that the synthesis of oxide Semiconductor nanoparticles is an important factor in highly sensitive semiconductor gas sensors. However, as-synthesized nanocrystals generally grow large during calcination at high temperature, and this thermal crystal growth reduces the sensor response. Therefore,. to refine the response of the semiconductor gas sensor,:we synthesized thermally stable SnO2 nanocrystals by heating under reflux a SnCl4 TBAH-TEG mixture. The obtained SnO2 nanocrystals exhibited high thermal stability even when Calcined at a. temperature up, to 600 degrees C. The gas-sensing films fabricated from the thermally stable SnO2 nanocrystals exhibited a high sensor response to hydrogen due to their small crystal size, and a change in their surface property as compared with conventional SnO2 nanocrystals synthesized via hydrothermal treatment. - Koichi Suematsu; Miyuki Sasaki; Nan Ma; Masayoshi Yuasa; Kengo ShimanoeACS SENSORS 1 7 913 - 920 2016年07月 [査読有り]
The type and amounts of oxygen adsorption species at various atmospheric humidity levels are important factors in improving the sensitivity to combustible gases and stability to humidity changes of SnO2-based resistive-type gas sensors. We investigated the effect of antimony (Sb) doping of SnO2 nanoparticles on the stability of the sensitivity to humidity changes and oxygen adsorption species under humid atmosphere. No significant degradation of the sensitivity to hydrogen of Sb-SnO2 sensors was observed between 16 and 96 RH%, while an undoped SnO2 sensor showed gradually decreasing responses with increasing humidity. An evaluation of oxygen adsorption species under humid atmosphere showed a transition from O2- to O- with increasing humidity from 16 to 96 RH%. However, the O2- adsorption sites were maintained on the surfaces of the Sb-SnO2, even as the humidity increased. Moreover, the extent of oxygen adsorption on the Sb-SnO2 was not obviously changed with increasing humidity. These results indicate that Sb atoms function as hydroxyl absorbers and also generate O2- adsorption sites in their vicinity. Additionally, Pd loading on the Sb-SnO2 further enhanced the sensor response under humid atmosphere, while maintaining the stability to humidity changes. Therefore, we successfully imparted stability to the sensitivity of SnO2 nanoparticles during humidity changes, representing an important improvement with applications to the development of high performance, practical, resistive-type gas sensors. - Koichi Suematsu; Kazuya Kodama; Nan Ma; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeRSC ADVANCES 6 7 5169 - 5176 2016年 [査読有り]
The simultaneous improvement of sensor response and response/recovery kinetics is important for repeated gas monitoring using high-performance semiconductor gas sensors. In this study, we attempted to add two different types of catalysts to the SnO2 nanoparticles to enhance their responsive properties and investigated the impact of each catalyst on co-loaded SnO2 nanoparticles. V2O5 and Pd were loaded on sphere-type SnO2 nanoparticles by a simple impregnation method, and we evaluated the effect on the sensor response to H-2 and recovery speed. Separately, V2O5 and Pd loading effectively enhance the sensor response and rapid recovery reaction, respectively, because V2O5 provides SnO2 with reactive adsorbed oxygen, and Pd enhances the catalytic activity on the particle surface. Further, V2O5- and Pd-co-loaded SnO2 shows both high sensor response and rapid recovery reaction. Thus, co-loaded SnO2 is improved by V2O5 and Pd simultaneously, and the two loadings are complementary. In particular, V2O5 loading reduces the recovery speed due to the re-oxidization of V2O5 on SnO2. However, Pd accelerates V2O5 re-oxidization by catalytic activity and the recovery kinetics of the co-loaded SnO2. Therefore, this fundamental investigation offers a suitable material design for additives, which can be applied to manufacture high-performance electrochemical devices such as semiconductor gas sensors. - Koichi Suematsu; Kiyomi Yamada; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeSENSORS AND MATERIALS 28 11 1211 - 1217 2016年 [査読有り]
We successfully prepared SnO2 nanoparticles of two different sizes by hydrothermal synthesis and calcination at 400 degrees C to evaluate the oxygen adsorption equilibrium constant K(O2-ad) on a particle surface. The K(O2-ad) values were calculated from the relationship between the electric resistance and the oxygen partial pressure (P-O2). The K(O2-ad) values of 7 and 17 nm SnO2 nanoparticles were almost in the same range when the donor densities of these nanoparticles are the same. Additionally, the sensor responses of these nanoparticles to hydrogen were affected by the surface-area-to-volume ratio because the K(O2-ad) values are the same. Thus, we propose that the K(O2-ad) value can be evaluated on the basis of the relationship between the electric resistance and P-O2. - Baldovino F. H; Quitain A. T; Dugos Nathaniel P; Roces Susan A; Koinuma Masayoshi; Yuasa M; Kida TRSC ADVANCES 6 115 113924 - 113932 2016年 [査読有り]
- Satoshi Suehiro; Keisuke Horita; Masayoshi Yuasa; Tooru Tanaka; Katsuhiko Fujita; Yoichi Ishiwata; Kengo Shimanoe; Tetsuya KidaINORGANIC CHEMISTRY 54 16 7840 - 7845 2015年08月 [査読有り]
The p-type nanocrystals (NCs) of copper-based chalcogenides, such as CuInSe2 and Cu2ZnSnS4, have attracted increasing attention in photovoltaic applications due to their potential to produce cheap solution-processed solar cells. Herein, we report the synthesis of copper antimony-sulfide (CAS) NCs with different crystal phases including CuSbS2, Cu3SbS4, and Cu12Sb4S13. In addition, their morphology, crystal phase, and optical properties were characterized using transmission electron microscopy, X-ray diffractometry, UV vis near-IR spectroscopy, and photoemission yield spectroscopy. The morphology, crystal phase, and electronic structure were significantly dependent on the chemical composition in the CAS system. Devices were fabricated using particulate films consisting of CAS NCs prepared by spin coating without a high-temperature treatment. The CAS NC-based devices exhibited a diode-like current voltage characteristic when coupled with an n-type CdS layer. In particular, the CuSbS, NC devices exhibited photovoltaic responses under simulated sunlight, demonstrating its applicability for use in solution-processed solar cells. - Koichi Suematsu; Yuka Shin; Nan Ma; Tokiharu Oyama; Miyuki Sasaki; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeANALYTICAL CHEMISTRY 87 16 8407 - 8415 2015年08月 [査読有り]
Real-time monitoring of specific gas concentrations with a compact and portable gas sensing device is required to sense potential health risk and danger from toxic gases. For such purposes, we developed an ultrasmall gas sensor device, where a micro sensing film was deposited on a micro heater integrated with electrodes fabricated by the microelectromechanical system (MEMS) technology. The developed device was operated in a pulse-heating mode to significantly reduce the heater power consumption and make the device battery-driven and portable. Using clustered Pd/SnO2 nanoparticles, we succeeded in introducing mesopores ranging from 10 to 30 nm in the micro gas sensing film (area: phi 150 mu m) to detect large volatile organic compounds (VOCs). The micro sensor showed quick, stable, and high sensor responses to toluene at ppm (parts per million) concentrations at 300 degrees C even by operating the micro heater in a pulse-heating mode where switch-on and -off cycles were repeated at one-second intervals. The high performance of the micro sensor should result from the creation of efficient diffusion paths decorated with Pd sensitizers by using the clustered Pd/SnO2 nanoparticles. Hence we demonstrate that our pulse-driven micro sensor using nanostructured oxide materials holds promise as a battery-operable, portable gas sensing device. - Tetsuya Kida; Subaru Ninomiya; Hiroki Tatsushiro; Ken Watanabe; Masayoshi Yuasa; Kengo ShimanoeCeramics International 41 6 7830 - 7835 2015年07月 [査読有り]
© 2015 Elsevier Ltd. and Techna Group S.r.l. All rights reserved. Selective oxygen separation from air was performed using perovskite-type oxide membranes made of Ba0.95La0.05FeO3-δ. We demonstrated that surface modification of Ba0.95La0.05FeO3-δ membranes with La1-xSrxFeO3-δ catalyst layers led to an increase in oxygen permeation fluxes at 700-930 °C. We studied the effects of oxygen vacancy amounts, surface area, particles size, surface treatment of La1-xSrxFeO3-δ on the oxygen permeability of the membranes fitted with La1-xSrxFeO3-δ catalyst layers. Among the catalyst layers tested, the membranes fitted with La0.9Sr0.1FeO3-δ (x=0.1) showed the highest oxygen permeation flux probably because of its higher porosity and uniform morphology without open voids, which would increase the number of surface reaction sites. The obtained results suggest the feasibility of further upgrading the membrane performance by using surface catalyst layers having a homogeneous morphology and a different composition from that of the mother membrane. - Nan Ma; Koichi Suematsu; Masayoshi Yuasa; Kengo ShimanoeACS APPLIED MATERIALS & INTERFACES 7 28 15618 - 15625 2015年07月 [査読有り]
Pd particles of different nanosizes were loaded on the SnO2 surface by using different Pd precursors for the purpose of investigating the Pd size effect on gas sensing properties in humid atmosphere. One kind of Pd-loaded SnO2 natioparticle was characterized by smaller Pd particles (2.6 nm) with high dispersion, while another kind was characterized by larger Pd particles (5-10 nm) with low dispersion. It was found that both kinds of Pd on the SnO2 surface let the mainly, adsorbed oxygen species change from O- to O2- in humid atmosphere at 350 degrees C. In addition, the water vapor poisoning effect on electric resistance and sensor response was greatly reduced by loading Pd. Interestingly; for the CO response at 350 degrees C, Pd-SnO2 with small Pd size showed almost constant sensor response with varying humidity (0.5-4 vol % H2O). While the CO response of Pd-SnO2 with large Pd site even increased with increasing amount of water vapor. Moreover, the former CO response was increased from 300 to 350 degrees C, but the later response decreased with increase in operating temperature. These behaviors were analyzed by temperature programed reduction (TPR) in H-2 and CO atmospheres, and they were supported by the different catalytic activities of different nanosized Pd particles. - Tetsuya Kida; Hiromasa Furuso; Kota Kumamoto; Azzah Dyah Pramata; Masayoshi Yuasa; Kengo ShimanoeCHEMISTRY-A EUROPEAN JOURNAL 21 20 7462 - 7469 2015年05月 [査読有り]
Recently, the process by which energy is transferred from photoexcited semiconductor nanocrystals, called quantum dots (QDs), to other semiconductors has attracted much attention and has potential application in solar energy conversion (i.e., QD-sensitized solar cells). Sensitization of wide band gap polyoxometalates (POMs) to visible light by using CuInS2 QDs dispersed in an organic solution is demonstrated herein. Photoluminescence quenching and lifetime studies revealed efficient electron transfer from the CuInS2 QDs to POMs, such as SiW12O40 and W10O32, that were hybridized with a cationic surfactant. CuInS2 QDs function as an antenna that absorbs visible light and supplies electrons to the POMs to enable certain photocatalytic reactions, including noble-metal-ion reduction. The photoenergy storage capabilities of the QD-POM system, in which electrons photogenerated in QDs by visible-light excitation are trapped and accommodated by POMs to form reduced POM, are also demonstrated. Electrons stored in the POM can be later discharged through reductive reactions, such as oxygen reduction, in the dark. - R. G. Pavelko; M. Yuasa; T. Kida; K. Shimanoe; N. YamazoeSENSORS AND ACTUATORS B-CHEMICAL 210 719 - 725 2015年04月 [査読有り]
Using the same protocol for precipitation of tin hydroxide and its hydrothermal treatment (HT), we synthesize SnO2 from three precursors - tin(IV) acetate, tin(IV) hydroxide acetate and tin(IV) chloride pentahydrate. After annealing on sensor substrates the materials were found to be very similar from structural point of view. However, their sensing properties (responses to CO and H-2 as a function of humidity) were discovered to be very different, which was related to different impurity level in the samples. High amount of chlorine and potassium (ca. 300 ppmw) in two samples corresponded well to notably high water vapor effect. Differences in surface areas (within 20-60 m(2)/g) and pore volumes (between 0.11 and 0.19 cm(3)/g), found for the materials in question, seem to play minor role if the impurities are present. (C) 2015 Elsevier B.V. All rights reserved. - Nan Ma; Koichi Suematsu; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeACS APPLIED MATERIALS & INTERFACES 7 10 5863 - 5869 2015年03月 [査読有り]
The effect of water vapor on Pd-loaded SnO2, sensor was investigated through the oxygen adsorption behavior and sensing properties toward hydrogen and CO under different humidity conditions. On the basis of the theoretical model reported previously, it was found that the mainly adsorbed oxygen species on the SnO2, surface in humid atmosphere was changed by loading Pd, more specifically, for neat SnO2, was O-, while for 0.7% Pd-SnO, was O2-. The water vapor poisoning effect on electric resistance and sensor response was reduced by loading Pd. Moreover the sensor response in wet atmosphere was greatly enhanced by loading Pd. It seems that the electron depletion layer by p-n junction of PdO-SnO2, may impede OH- adsorption. - Koichi Suematsu; Nan Ma; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeRSC ADVANCES 5 105 86347 - 86354 2015年 [査読有り]
Inhibition of hydroxyl poisoning of SnO2 nanoparticles is important to develop a highly sensitive combustible gas sensor that functions in a humid atmosphere. For this purpose, we incorporated Al into SnO2 nanoparticles (Al-doped SnO2) by a precipitation method, and fabricated a thick-film-type sensor using a screen printing method. Bare SnO2 nanoparticles and Al2O3-loaded SnO2 nanoparticles were also prepared for comparison. The oxygen adsorption amount clearly decreased after Al doping and Al2O3 loading, according to temperature programmed desorption measurements. Al doping enhanced the sensor response (sensitivity) to H-2, CO and C2H5OH in a humid atmosphere by almost five to ten times. Al2O3 loading also slightly increased the sensor response to each gas in a humid atmosphere. The enhancement of the sensor response was attributed to both Al and Al2O3 acting as hydroxyl absorbers on the surface of the nanoparticles, thereby providing an oxygen adsorption site for surface combustion reactions in a humid atmosphere. Based on the relationship between the sensor response and C2H5OH concentration, it was estimated that Al-doped SnO2 can detect less than one ppm C2H5OH in a humid atmosphere. Therefore, doping with Al, which protects and holds the adsorbed oxygen on the surface of the SnO2, is important as a surface modification to obtain humidity-tolerant semiconductor gas sensors. - Zhongqiu Hua; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeCHEMISTRY LETTERS 43 9 1435 - 1437 2014年09月 [査読有り]
Neat and Pd-loaded WO3 sensors were fabricated from lamellar-structured nanoparticles. The sensing mechanism of hydrogen was investigated. Oxygen adsorption properties were studied through the resistive responses and TPD measurements. It was observed that oxygen adsorption was significantly enhanced by Pd loading from the viewpoint of p-n junction for PdO-WO3. In the presence of H-2, the resistive response to oxygen for Pd-loaded WO3 was obviously different from that of neat WO3, which demonstrated a relatively weak response to oxygen. It was concluded that Pd loading not only promoted the sensor response but also made the sensing mechanism different from that of neat WO3. It was proposed that with Pd loading, the surface lattice oxygen near Pd sites was involved for the sensing process of H-2. - Koichi Suematsu; Yuka Shin; Zhongqiu Hua; Kohei Yoshida; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeACS APPLIED MATERIALS & INTERFACES 6 7 5319 - 5326 2014年04月 [査読有り]
Gas sensing with nanosized oxide materials is attracting much attention because of its promising capability of detecting various toxic gases at very low concentrations. In this study, using clustered SnO2 nanoparticles formed by controlled particle aggregation, we fabricated highly sensitive gas sensing films to detect large gas molecules such as toluene. A hydrothermal method using stanic acid (SnO2 center dot nH(2)O) gel as a precursor produced monodispersed SnO2 nanoparticles of ca. 5 nm at pH 10.6. Decreasing the solution pH to 9.3 formed SnO2, clusters of ca. 45 nm that were assemblies of the monodispersed nanoparticles, as determined by dynamic light scattering, X-ray diffraction, and transmission electron microscopy analyses. Porous gas sensing films were successfully fabricated by a spin-coating method using the clustered nanoparticles due to the loose packing of the larger aggregated particles. The sensor devices using the porous films showed improved sensor responses (sensitivities) to H-2 and CO at 300 degrees C. The enhanced sensitivity resulted from an increase in the film's porosity, which promoted the gas diffusivity of the sensing films. Pd loading onto the clustered nanoparticles further upgraded the sensor response due to catalytic and electrical sensitization effects of Pd. In particular, the Pd-loaded SnO2 nanoparticle clusters showed excellent sensitivity to toluene, able to detect it at down to low ppb levels. - Tetsuya Kida; Aya Nishiyama; Zhongqiu Hua; Koichi Suematsu; Masayoshi Yuasa; Kengo ShimanoeLANGMUIR 30 9 2571 - 2579 2014年03月 [査読有り]
Tungsten trioxide (WO3) is one of the important multifunctional materials used for photocatalytic, photoelectrochemical, battery, and gas sensor applications. Nanostructured WO3 holds great potential for enhancing the performance of these applications. Here, we report highly sensitive NO2 sensors using WO3 nanolamellae and their sensitivity improvement by morphology control using SnO2 nanoparticles. WO3 nanolamellae were synthesized by an acidification method starting from Na2WO4 and H2SO4 and subsequent calcination at 300 degrees C. The lamellae were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), which clearly showed the formation of single-crystalline nanolamellae with a c-axis orientation. The stacking of each nanolamella to form larger lamellae that were 50-250 nm in lateral size and 15-25 nm in thickness was also revealed. From pore size distribution measurements, we found that introducing monodisperse SnO2 nanoparticles (ca. 4 nm) into WO3 lamella-based films improved their porosity, most likely because of effective insertion of nanoparticles into lamella stacks or in between assemblies of lamella stacks. In contrast, the crystallite size was not significantly changed, even by introducing SnO2. Because of the improvement in porosity, the composites of WO3 nanolamellae and SnO2 nanoparticles displayed enhanced sensitivity (sensor response) to NO2 at dilute concentrations of 20-1000 ppb in air, demonstrating the effectiveness of microstructure control of WO3 lamella-based films for highly sensitive NO2 detection. Electrical sensitization by SnO2 nanoparticles was also considered. - Roman G. Pavelko; Joong-Ki Choi; Atsushi Urakawa; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeJOURNAL OF PHYSICAL CHEMISTRY C 118 5 2554 - 2563 2014年02月 [査読有り]
Water isotope exchange in the presence of CO on two undoped tin dioxides has been studied using modulation excitation diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and resistance measurements at 300 degrees C. Our results reveal that the material synthesized from tin tetrachloride (SnO2Cl) manifests higher affinity to chemisorbed water than that made from tin hydroxide acetate (SnO2Ac). The latter was shown to exhibit a strong correlation between the evolution of surface OH groups (bridging type, involved in hydrogen bonding) and electric resistance upon increasing concentration of CO. Water desorption kinetics, being independent of CO concentration for both materials, was found to be slower for SnO2Cl by ca. 30% with respect to SnO2Ac. High affinity to water as well as low sensor signals to CO in humid air reported for SnO2Cl were proposed to originate from traces of Cl ions (about 0.15 wt % for SnO2Cl and 0.03 wt % for SnO2Ac) and not microstructure, which has been confirmed to be similar for both materials. Two types of water adsorption and two CO sensing mechanisms are proposed for SnO2Cl and SnO2Ac on the basis of the results. - Nguyen Viet Long; Nguyen Viet Long; Nguyen Viet Long; Nguyen Viet Long; Nguyen Viet Long; Yong Yang; Masayoshi Yuasa; Cao Minh Thi; Yanqin Cao; Thomas Nann; Masayuki Nogami; Masayuki NogamiRSC Advances 4 16 8250 - 8255 2014年 [査読有り]
The gas sensing properties of polyhedral α-Fe2O 3 particles were investigated. The polyhedral α-Fe 2O3 particles were synthesized via a modified polyol method with the addition of an extra amount of NaBH4 in ethylene glycol, and fabricated to a thick gas sensing film after calcination at 500°C and 900°C. The polyhedral α-Fe2O3 particles exhibited a p-type nature, which is a new result opposite to other results of recent reports of semiconductor gas sensors using α-Fe 2O3. In particular, we suggest that the difference between structure and morphology of α-Fe2O3 particles can lead to p-type and n-type characterization. In addition, we suggested that Na ions from NaBH4 were incorporated into α-Fe2O 3 oxide. They are the cause of the generation of holes in α-Fe2O3 oxide that led to the p-type nature of α-Fe2O3 oxide. The measurement of the sensor response to hydrogen, carbon monoxide, toluene, propane and ethanol revealed that the sensor device synthesized using polyhedral α-Fe2O 3 particles is sensitive to hydrocarbons and ethanol. Importantly, the sensor device using polyhedral α-Fe2O3 particles calcined at 900°C was strongly sensitive to ethanol due to the porous structure of the α-Fe2O3 particles. © 2014 The Royal Society of Chemistry. - Nguyen Viet Long; Yong Yang; Masayoshi Yuasa; Cao Minh Thi; Yanqin Cao; Thomas Nann; Masayuki NogamiRSC ADVANCES 4 13 6383 - 6390 2014年 [査読有り]
In the present research, large iron oxide microparticles with large sizes in the range of 1-5 mm have been facilely synthesized by a modified polyol method with NaBH4 as a versatile strong reducing agent. We found that the highly homogeneous iron oxide microparticles' novel structure is the best pure crystal phase of alpha-Fe2O3 in terms of polyhedral morphology and shape in existence. There are no diffraction peaks of other crystal phases from impurities in alpha-Fe2O3 microparticle products in the crystal growth. Interestingly, a new method of heat treatment or atomic surface deformation allowed for the discovery of a new large alpha-Fe2O3 structure with controlled specific alpha-Fe2O3 oxide grains in the crystal structure. The severe surface deformation of sharp, polyhedral, large alpha-Fe2O3 microparticles under a sintering treatment was found to give un-sharp, polyhedral large alpha-Fe2O3 microparticles with specific grains and boundaries. - Satoshi Suehiro; Keisuke Horita; Kota Kumamoto; Masayoshi Yuasa; Tooru Tanaka; Katsuhiko Fujita; Kengo Shimanoe; Tetsuya KidaJOURNAL OF PHYSICAL CHEMISTRY C 118 2 804 - 810 2014年01月 [査読有り]
Solution-processed photovoltaic (PV) devices based on semiconductor nanocrystals (NCs) such as Cu2ZnSnS4 (CZTS) and CuInS2 (CIS) are attracting much attention for use in next-generation solar cells. However, the performance of NC-based devices is hindered by insulating surface-capping ligands that limit transfer/transport of charged carriers. Here, to remove surface-capping ligands (long-chain fatty amines) from NCs, we use the strong alkylating agent methyl iodide, which converts primary amines to quaternary amines that have low coordinating affinity to the NC surface. X-ray diffraction, Raman spectroscopy, and Fourier transform infrared spectroscopy analyses confirm the successful removal of capping ligands from the CZTS surface after treatment with methyl iodide without changing the crystal structure of CZTS. CZTS and CIS NC-based devices treated with methyl iodide exhibit a reproducible PV response under simulated sunlight. The developed route can potentially enhance the performance of NC-based devices used in a broad range of applications. - Koichi Suematsu; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 161 6 B123 - B128 2014年 [査読有り]
Oxygen adsorption plays key roles in resistive-type SnO2 gas sensors that can very sensitively detect combustible gases such as CO and hydrocarbons. Thus, exact evaluation of the electric resistance of SnO2 in response to oxygen is important to understand the oxygen adsorption mechanism. However, infinitesimal impurities contained in even high-grade commercial oxygen cylinders impose great effect on the sensitivity of SnO2. In this study, we designed an experimental system, which composed of gas pretreatment chambers including a Pt/Al2O3 combustion catalyst and a zeolite adsorbent, for exact analysis of gas sensing properties. Our experimental system allowed for the accurate determination of the dependence of the electrical resistance (R) on oxygen partial pressure (PO2) by removing impurities in sample gases. According to the linear correlation between R versus PO21/4, we concluded that oxygen adsorbed on the SnO2 surface in the form of O2- at 350 and 450 degrees C in extremely dry conditions that was achieved using the experimental system. The competitive adsorption on the SnO2 surface in the form of O- and O2- was suggested at 300 degrees C. (C) 2014 The Electrochemical Society. All rights reserved. - Zhongqiu Hua; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeTHIN SOLID FILMS 548 677 - 682 2013年12月 [査読有り]
An impregnation method has been proposed to prepare Pd-loadedWO3 nanolamellae for the gas sensing application. WO3 nanolamellaewere synthesized via an acidificationmethod and impregnatedwithH(2)Pd(2)Cl(4) solution followed by an ammoniawashing treatment. Themicrostructure and H2 sensing characteristics of the Pd-loaded WO3 nanolamellae were investigated. Electronmicroscopy studies revealed that PdO particles have been deposited on the surfaces ofWO(3) with a diameter ranging from3 to 15 nm. With quite a small amount of Pd, the sensor resistivity was greatly enhanced and it demonstrated an extremely large response to the reduced gas. It was found that sensing response at low temperature increased dramatically with a rise in the gas concentration for Pd-loaded sensors. However, the sensor response at high temperature quickly saturated with increasing the H-2 concentration for larger amount of Pd loading. An enhanced combustion effect of Pd and chemical adsorbed water could be responsible for such a saturation of sensing response at high temperatures. (C) 2013 Elsevier B.V. All rights reserved. - Masayoshi Yuasa; Tsubasa Matsuyoshi; Tetsuya Kida; Kengo ShimanoeJOURNAL OF POWER SOURCES 242 216 - 221 2013年11月 [査読有り]
The discharge/charge performance of Li-air cell using the carbon-supported LaMn0.6Fe0.4O3 nanoparticle as a cathode catalyst was investigated in this study. The carbon-supported LaMn0.6Fe0.4O3 nanoparticle was prepared via a reverse homogeneous precipitation method, and fabricated to air electrode. Li-air cell was constructed using air electrode, Li metal foil and 1.0 M LiPF6 in propylene carbonate as a cathode, anode and electrolyte, respectively. As the result, the carbon-supported LaMn0.6Fe0.4O3 nanoparticle exhibited both the oxygen evolution activity and the oxygen reduction activity in the non-aqueous electrolyte. The investigation about the presence and absence of the catalytic layer and the gas diffusion layer revealed that each layer is indispensable for the excellent electrode performance, and that the catalytic layer and the gas diffusion layer has a important role to supply the electrolyte and the oxygen gas, respectively. The investigation about the amount of the catalytic layer and the effect of the oxygen concentration revealed that the oxygen diffusability into the air electrode strongly affects to the discharge capacity of Li-air cells. (C) 2013 Elsevier B.V. All rights reserved. - Tetsuya Kida; Shuhei Fujiyama; Koichi Suematsu; Masayoshi Yuasa; Kengo ShimanoeJournal of Physical Chemistry C 117 34 17574 - 17582 2013年08月 [査読有り]
Gas sensing is an important application of metal oxides. The gas sensor response of metal oxide films is greatly influenced by particle size, pore size, thickness, and surface states. To study the effects of particle and pore sizes of sensing films on sensitivity, we fabricated SnO2-based films with different particle and pore sizes and studied sensor responses to three different gases: H2, CO, and H2S with different Knudsen diffusion coefficients. The pore size radii of the gas sensing films were successfully controlled from 2.8 to 5.5 nm using SnO2 nanoparticles of different sizes (4-17 nm diameter) that were synthesized by seed-mediated growth under hydrothermal conditions. Sensor response to H2 increased with decreasing particle size because of the formation of an electron depletion layer within the nanosized crystals. In contrast, the response to CO and H 2S increased with increasing particle size and the resultant pore size. Using the Knudsen diffusion-surface reaction equation, we simulated a gas concentration profile within the films, which revealed that the diffusion of CO and H2S is limited by small pores because of their lower diffusion rates compared with H2. We show that controlling the pore size of the sensing films produces ultrasensitive films, and a large resistance change by 4 orders of magnitude is achieved in response to a low concentration of H 2S (5 ppm). © 2013 American Chemical Society. - Masayoshi Yuasa; Naoki Tachibana; Kengo ShimanoeCHEMISTRY OF MATERIALS 25 15 3072 - 3079 2013年08月 [査読有り]
Carbon-supported La1-xCaxMn1-yFeyO3 nanoparticles were synthesized, and their oxygen reduction activities and electronic states were investigated. A reverse micelle method using KIvInO, as a source of high valence state Mn successfully yielded carbon-supported La1-xCaxMn1-yFeyO3 nanoparticles even when calcined under a reducing atmosphere. The oxygen reduction activity of carbonsupported La1-xCaxMn1-yFeyO3 exceeded that of carbon-supported Pt nanoparticles when the Ca composition was limited to the range of 0.4 to 0.8. X-ray photoelectron spectroscopy (XPS) measurements of La1-xCaxMn1-yFeyO3 particle surfaces revealed the existence of Mn+, which is important in the oxygen reduction activity. Depth analysis of La1-xCaxMn1-yFeyO3 nanoparticles by XPS revealed the formation of a CaCO3 impurity and an A-site deficient perovskite-type oxide containing a high surface concentration of Mn4+. - Masayoshi Yuasa; Takahito Nagano; Naoki Tachibana; Tetsuya Kida; Kengo ShimanoeJournal of the American Ceramic Society 96 6 1789 - 1794 2013年06月 [査読有り]
A catalytic combustion-type gas sensor using a positive temperature coefficient (PTC) thermistor, which shows a sharp resistance change around Curie temperature, was developed for the detection of hydrogen. La-doped BaTiO 3 (Ba0.998 La0.002 TiO3) was prepared through a solid-state method and an oxalic acid method. La-doped BaTiO3 obtained by the oxalic acid method showed improved PTC properties, due to the formation of fine particles, as compared to that prepared with the solid-state method. The resulting sensor device showed a fairly high H2 sensitivity in the range of 100-1000 ppm. In addition, the H 2 sensitivity and response speed were improved by coating a Pt/SiO2 catalyst on the sensor device because the catalytic combustion efficiency of H2 was improved by the catalyst coating. © 2013 The American Ceramic Society. - Tetsuya Kida; Min-Hyun Seo; Koichi Suematsu; Masayoshi Yuasa; Yuichi Kanmura; Kengo ShimanoeApplied Physics Express 6 4 2013年04月 [査読有り]
To develop a portable gas sensor with low power consumption, we deposited a micro size sensing film (100 × 100 μm2) on a Si substrate with an integrated micro heater and electrodes constructed using micro-electro- mechanical system (MEMS) technology. TiO2 nanotubes ca. 500nm long with a 50 nm diameter were used to sense and detect volatile organic compounds (VOCs). We demonstrate that the MEMS sensor responded well to ethanol and toluene in air at elevated temperatures, such as 500 °C, which suggests that it is a promising battery-operable micro gas sensor for detecting VOCs. © 2013 The Japan Society of Applied Physics. - Tetsuya Kida; Hiromasa Matsufuji; Masayoshi Yuasa; Kengo ShimanoeLangmuir 29 7 2128 - 2135 2013年02月 [査読有り]
In recent years, the recovery of noble metals from waste has become very important because of their scarcity and increasing consumption. In this study, we attempt the photochemical recovery of noble metals from solutions using inorganic-organic hybrid photocatalysts. These catalysts are based on polyoxometalates such as PMo12O40 3-, SiW 12O40 4-, and γ-SiW10O 36 8- coupled with a cationic surfactant, dimethyldioctadecylammonium (DODA). The three different photocatalysts dissolved in chloroform were successful in photoreducing gold ions dissolved in water in a two-phase (chloroform/water) system under UV irradiation (λ < 475 nm). The γ-SiW10O36/DODA photocatalyst exhibited the best activity and recovered gold from solution efficiently. It was suggested that one-electron reduced γ-SiW10O36 9- formed by the UV irradiation reduced gold ions. As a result, large two-dimensional particles (gold nanosheets) were produced using the γ-SiW10O36/DODA photocatalyst, indicating that the reduction of gold ions occurred at the interface between chloroform and water. The γ-SiW10O36/DODA photocatalyst was able to recover metals such as platinum, silver, palladium, and copper from deaerated solutions. The selective recovery of gold is possible by controlling pH and oxygen concentration in the reaction system. © 2013 American Chemical Society. - Nguyen Viet Long; Michitaka Ohtaki; Masayoshi Yuasa; Satoshi Yoshida; Taiga Kuragaki; Cao Minh Thi; Masayuki NogamiJOURNAL OF NANOMATERIALS 2013 2013年 [査読有り]
In our present research, bottom-up self-assembly of gold (Au) nanoparticles on a flat copper (Cu) substrate is performed by a facile method. The very interesting evidence of self-assembly of Au nanoparticles on the top of the thin assembled layer was observed by scanning electron microscopy (SEM). We had discovered one of the most general and simple methods for the self-assembly of metal nanoparticles. The general physical and chemical mechanisms of the evaporation process of the solvents can be used for self-assembly of the as-prepared nanoparticles. The important roles of molecules of the used solvents are very critical to self-assembly of the as-prepared Au nanoparticles in the case without using any polymers for those processes. It is clear that self-assembly of such one nanosystem of the uniform Au nanoparticles is fully examined. Finally, an exciting surface plasmon resonance (SPR) phenomenon of the pure Au nanoparticles in the solvent was fully discovered in their exciting changes of the narrow and large SPR bands according to synthesis time. The SPR was considered as the collective oscillation of valence electrons of the surfaces of the pure Au nanoparticles in the solvent by incident ultraviolet-visible light. Then, the frequency of light photons matches the frequency of the oscillation of surface electrons of the Au nanoparticles that are excited. - Masayoshi Yuasa; Hiroshi Imamura; Masatoshi Nishida; Tetsuya Kida; Kengo ShimanoeELECTROCHEMISTRY COMMUNICATIONS 24 50 - 52 2012年10月 [査読有り]
We have already demonstrated that an air electrode using LaMnO3-supported on LaNiO3 efficiently works as a bi-functional air electrode for oxygen reduction and evolution. In order to improve the bi-functional activity, high specific surface area of nano-LaNiO3 was prepared by a new route using ZnO particles as an aggregation inhibitor. Nano-sized LaNiO3 (ca. 40 nm) was successfully prepared after removing ZnO by KOH solution from a LaNiO3-ZnO mixture prepared by a reverse homogeneous precipitation (RHP) method. The result showed that increasing the surface area of LaNiO3 support is very effective in improving both the oxygen reduction and evolution activities. (C) 2012 Elsevier B.V. All rights reserved. - Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeACS APPLIED MATERIALS & INTERFACES 4 8 4231 - 4236 2012年08月 [査読有り]
A stable sol suspension of Pd-loaded SnO2 nanocrystals, which is valid for both fundamental studies of semiconductor gas sensor and fabrications of a micro gas sensor, was fabricated by the photochemical deposition of PdCl42- onto SnO2 in an aqueous solution. UV light was irradiated on a mixture of a SnO2 sol obtained through a hydrothermal treatment of stannic acid gel in the presence of PdCl42- and ethanol/water at pH 2. A stable sol suspension of Pd-loaded SnO2 was successfully obtained by controlling the pH of the above suspension to 10.5 after UV irradiation. Thin-film type sensor devices (film thickness similar to 200 nm) using Pd-loaded SnO2 nanocrystal were successfully fabricated by a spin-coating method. Gas sensing measurements showed that the deposition of Pd on the SnO2 nanocrystals resulted in large electrical sensitization effect The maximum gas sensitization effect was obtained at 0.125 mol % Pd loading. Moreover, the Pd loading lowered the temperature, in which the maximum sensor response to H-2 was obtained, due to the efficient catalytic combustion of H-2 on Pd. - Koichi Suematsu; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 159 4 J136 - J141 2012年 [査読有り]
To verify theoretical model based on the surface depletion effect of oxide semiconductor in small crystallite, the SnO2 particles of different crystallite size and donor density were prepared by controlling heat-treatment temperature and Fe3+ doping concentration, respectively. In addition, Fe3+-doped SnO2 was compared with Fe2O3-loaded SnO2 to discuss the effect of donor density. The electrical resistance and sensor response of prepared SnO2 films were measured in various partial pressures of oxygen and hydrogen. As results, both undoped- and Fe3+-doped SnO2 showed the volume depletion in the oxygen concentration of more than 2.5% at 350 degrees C. The dependence of electrical resistance on oxygen partial pressure for smaller crystallite had steeper slope. Furthermore Fe3+-doping improved the sensor response to hydrogen, while the Fe2O3-loading did not work. Good agreement between experimental data the volume depletion theory was found. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.107204jes] All rights reserved. - Min-Hyun Seo; Masayoshi Yuasa; Tetsuya Kida; Yuich Kanmura; Jeung-Soo Huh; Noboru Yamazoe; Kengo ShimanoeJOURNAL OF THE CERAMIC SOCIETY OF JAPAN 119 1395 884 - 889 2011年11月 [査読有り]
Detection of volatile organic compounds (VOCs) has attracted considerable attention for indoor air quality and human breath analysis. Here, resistive-type gas sensors with porous films made of Au-loaded TiO2 nanotubes were developed for the detection of large-sized VOCs. Well-dispersed Au nanoparticles (10 to 20 nm) were photo-chemically deposited on TiO2 nanotubes (80 nm in diameter, 700 nm in length) prepared by a hydrothermal method. The device using the Au-loaded TiO2 nanotubes showed improved sensor responses to ethanol and toluene (50 ppm) in air at 500 degrees C. This suggested that Au nanoparticles deposited on the surface of TiO2 nanotubules without aggregation. We also demonstrated that the device could be used for the detection of large-sized VOC molecule, i.e., 2,6-diisopropylphenol (propofol), an intravenously administered hypnotic drug for induction and maintenance of anesthesia. The Au-loaded TiO2 nanotubes would offer a way to continuously monitor a change in the concentration of VOCs in exhaled air for medical diagnostics. (C) 2011 The Ceramic Society of Japan. All rights reserved. - Min-Hyun Seo; Masayoshi Yuasa; Tetsuya Kida; Jeung-Soo Huh; Noboru Yamazoe; Kengo ShimanoeSENSORS AND ACTUATORS B-CHEMICAL 154 2 251 - 256 2011年06月 [査読有り]
Porous gas sensing films composed of TiO2 nanotubes were fabricated for the detection of volatile organic compounds (VOCs), such as alcohol and toluene. In order to control the microstructure of TiO2 nanotubular films, ball-milling treatments were used to shorten the length of TiO2 nanotubes and to improve the particle packing density of the films without destroying their tubular morphology and crystal structure. The ball-milling treatment successfully modified the porosity of the gas sensing films by inducing more intimate contacts between nanotubes, as confirmed by scanning electron microscopy (SEM) and mercury porosimetry. The sensor using nanotubes after the ball-milling treatment for 3 h exhibited an improved sensor response and selectivity to toluene (50 ppm) at the operating temperature of 500 degrees C. However, an extensive ball-milling treatment did not enhance the original sensor response, probably owing to a decrease in the porosity of the film. The results obtained indicated the importance of the microstructure control of sensing layers in terms of particle packing density and porosity for detecting large sized organic gas molecules. (C) 2010 Elsevier B.V. All rights reserved. - Combustion-Type H-2 Gas Sensor Using a PTC Thermistor Based on Bi, Na-Codoped BaTiO3 as a TransducerNaoki Tachibana; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeSENSOR LETTERS 9 1 21 - 25 2011年02月 [査読有り]
We investigated the H-2 sensing properties of a catalytic combustion-type hydrogen sensor using a BaTiO3-based positive temperature coefficient (PTC) thermistor as a transducer. In this sensor, catalytic combustion of H-2 on Pt electrodes or a catalyst layer induces a remarkable change in the electric resistance as a sensor signal when the operating temperature is set near the Curie temperature of BaTiO3 (120 degrees C). However, the sensor response to H-2 is relatively low at lower H-2 concentrations because of lower combustion efficiency near 120 degrees C. In this study, Ba-0.9(Bi0.5Na0.5)(0.1)Ti0.999Nb0.001O3 (BNN-BT) with a higher Curie temperature (146 degrees C) was used as a transducer to increase the operating temperature and thus improve the sensor response. The sensor using BNN-BT and a Pt/SiO2 combustion catalyst showed improved sensor responses particularly at lower H-2 concentrations. It also showed good response and recovery behaviors in response to 100-1000 ppm H-2 in air. - Min-Hyun Seo; Masayoshi Yuasa; Tetsuya Kida; Jeung-Soo Huh; Noboru Yamazoe; Kengo ShimanoeSensor Letters 9 1 26 - 30 2011年 [査読有り]
The loading of noble metals was carried out to enhance the gas sensing characteristics of TiO2 nanotube-based sensors. Using a photochemical deposition method, Au nanoparticles were successfully deposited on TiO 2 nanotubes prepared by a hydrothermal method in a highly-dispersed state. The sensor device using a porous film composed of the Au-loaded (0.5 wt%) TiO2 nanotubes exhibited improved sensor responses to 10-50 ppm toluene in air at 500 °C. The sensor response was about two times higher than that of a sensor using commercial TiO2 nanoparticles (degussa P-25). The results demonstrate that the Au loading is a very efficient method for improving the sensing characteristics of TiO2 nanotube-based sensors operative at high temperatures. Copyright © 2011 American Scientific Publishers. - Masayoshi Yuasa; Noboru Yamazoe; Kengo ShimanoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 158 4 A411 - A416 2011年 [査読有り]
The durability of carbon-supported La-Mn-based perovskites for the oxygen reduction reaction in strong alkaline solutions was investigated. Carbon-supported perovskite-type oxide nanoparticles were prepared by using a reverse micelle method. The durability of the carbon-supported LaMnO(3) nanoparticles was compared with that of carbon-supported LaMnO(3) prepared by the mechanical mixing of LaMnO(3) with the carbon support. As a result, the durability of the carbon-supported LaMnO(3) nanoparticles was less than that of the carbon-supported LaMnO(3) prepared by the mixing method due to a difference in the surface area of LaMnO(3), which has an effect on the oxygen reduction reaction. In order to improve the durability of the carbon-supported LaMnO(3) nanoparticles, Ca and Fe were substituted at the A-sites and B-sites of the perovskite lattice, respectively. As a result, it was found that the partial substitution of Ca and Fe is effective in improving the durability of LaMnO(3) under cathodic polarization in strong alkaline solutions. In particular, the substitution of Ca at the A-site not only improved the durability of the oxide but also enhanced the oxygen reduction activity owing to an increase in the average valence state of the B-sites of the perovskite lattice. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3551499] - Masayoshi Yuasa; Masatoshi Nishida; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 158 5 A605 - A610 2011年 [査読有り]
Carbon supported-electrocatalysts are principally used as catalytic layers for air electrodes of metal air batteries. However, these types of air electrodes are problematic because the carbon support can be oxidized to water soluble organic compounds under anodic polarization for a charge process. In this study, we have investigated to use LaNiO3 as a possible electrode material to replace the carbon support because LaNiO3 has both high electric conductivity and high oxygen evolution activity. LaNiO3 was prepared by a reverse homogeneous precipitation method, and then LaMnO3, which is active for oxygen reduction reactions, was successfully loaded onto the LaNiO3 by using a reverse micelle method. LaNiO3 had a much higher stability against anodic polarization as compared to carbon support. The LaMnO3/LaNiO3 composite electrode showed excellent bi-functional oxygen reduction/evolution activity in an alkaline solution and this makes it a highly potential candidate for use in rechargeable metal-air batteries. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3562564] All rights reserved. - Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeELECTROCHEMICAL AND SOLID STATE LETTERS 14 5 A67 - A69 2011年 [査読有り]
To obtain a highly active and low-cost oxygen reduction electrode, as compared with a Pt-loaded carbon electrode, a nano-sized La-Mn-based perovskite-type oxide on a carbon support was prepared through the reverse-micelle method. An gas diffusion oxygen reduction electrode using nano-sized La(0.4)Ca(0.6)Mn(0.9)Fe(0.1)O(3) as a electrocatalyst allowed a electrode potential as high as -50 mV (vs Hg/HgO) in 9 mol/l NaOH at 500 mA cm(-2). This electrode potential is much higher than the electrode potential of carbon-supported Pt nanoparticles at the same current density. This result suggests that nano-sized La(0.4)Ca(0.6)Mn(0.9)Fe(0.1)O(3) is a promising candidate as an alternative oxygen reduction catalyst of Pt nanoparticles. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3561762] All rights reserved. - Hirofumi Inoue; Mike Andersson; Masayoshi Yuasa; Tetsuya Kida; Anita Lloyd Spetz; Kengo ShimanoeELECTROCHEMICAL AND SOLID STATE LETTERS 14 1 J4 - J7 2011年 [査読有り]
A solid-state CO2 sensor device using a metal-insulator-silicon carbide (MISiC) capacitor combined with a Li2CO3-BaCO3 auxiliary layer was fabricated and tested for its basic sensing properties. The MISiC-based CO2 sensor attached with the carbonate showed typical capacitance-voltage (C-V) properties in air at 400 degrees C, and the sensor device responded well to changes in CO2 concentration in air at 400 degrees C. The sensor signals were directly proportional to the logarithm of CO2 concentration. The results suggested that an electrochemical reaction of CO2 occurred at the interface between the carbonate layer and the electrode, causing the applied voltage to shift in response to CO2. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3512998] All rights reserved. - Hirofumi Inoue; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 158 2 J36 - J41 2011年 [査読有り]
In order to enhance the response speed, noble metal (Ru) loading into the WO3-NaNO2 sensing layer for the field effect transistor (FET)-based NO2 sensors was investigated. The sensing layer was prepared by heat-treating the mixture powder of NaNO2 and noble metal (Ru)-loaded WO3 at 300 degrees C. The effects of loading amounts of the noble metal on NO2 sensing performances as well as the microstructure of the sensing layer have been examined. It was found that the optimization of the noble metal loading amount into the sensing layer was important for the improvement of 90% response-and recovery-times. Field emission scanning electron microscopy observations revealed that the sensing layer became porous with increasing noble metal loading amounts. However, extensive addition of Ru (above 0.2 wt% to WO3) into the sensing layer resulted in the degradation of sensing characteristics, although the sensing layer showed a highly porous structure. According to theoretical analysis based on Knudsen gas diffusion reported by Matsunaga et al., the diffusion of gas molecules into such a porous sensing layer is very fast. Therefore the obtained results suggested that the improvement of the response-and recovery-speeds is owing to the large contribution of noble metal nanoparticle to the electrochemical promotion rather than the diffusion of NO2 gas into the sensing layer. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3525625] All rights reserved. - 湯浅 雅賀; 島ノ江 憲剛セラミックス 46 1 17 - 21 日本セラミックス協会 2011年01月 [査読有り]
- 湯浅 雅賀; 島ノ江 憲剛電気化学および工業物理化学 : denki kagaku 78 7 629 - 632 The Electrochemical Society of Japan 2010年07月
- Ken Watanabe; Subaru Ninomiya; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Hajime Haneda; Kengo ShimanoeJournal of the American Ceramic Society 93 7 2012 - 2017 2010年07月 [査読有り]
In order to investigate the effect of the microstructure on the oxygen permeation in Ba0.95La0.05FeO3-δ membranes, three different methods such as solid-state reaction, nitrate and acetate decomposition (NAD), and amorphous malic acid precursor (AMP) methods were used to fabricate membranes with different grain sizes. The grain size of the membranes was successfully controlled from 35 to 829 μm2 via sintering at 1175°-1275°C. The oxygen permeation fluxes through the Ba0.95La0.05FeO3-δ membranes increased with a decrease in the grain size. The AMP method, using malic acid as a complexing agent, produced a membrane having the highest oxygen permeability (3.10 cm3·(min·cm2)-1 at 930°C) and the smallest grain size. The results obtained again confirmed the significant importance of microstructure control in designing high-performance oxygen permeable membranes. © 2010 The American Ceramic Society. - Ken Watenabe; Masayoshi Yuasa; Tetsuya Kida; Yasutake Teraoka; Noboru Yamazoe; Kengo ShimanoeAdvanced Materials 22 21 2367 - 2370 2010年06月 [査読有り]
(Figure Presented) High oxygen permeability was achieved using an asymmetric Ba0.95La0.05FeO3-δ membrane. In this membrane, oxygen diffuses physically through pores of a porous support and oxygen permeates electrochemically through a dense layer. The oxygen permeation flux of the asymmetric Ba0.95La0.05FeO 3-δ membrane reached more than 10 cm3 (STP) min -1 cm-2 from a test gas containing 50% oxygen at 930°C. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. - Masayoshi Yuasa; Akiko Koga; Tetsuya Kida; Kengo Shimanoe; Noboru YamazoeJOURNAL OF APPLIED ELECTROCHEMISTRY 40 3 675 - 681 2010年03月 [査読有り]
In this study, gas diffusion electrodes (GDEs) with two catalyst layers were fabricated and tested for their electrode performance for oxygen reduction in an alkaline solution. The LaMnO3/carbon black catalyst layers were fabricated using a reverse micelle method to finely disperse the LaMnO3 particles onto the carbon matrices, for which commercial Ketjen Black (KB) (1270 m(2) g(-1)) and Vulcan XC-72R (VX) (254 m(2) g(-1)) were used. The three-layer-structured GDE with the two LaMnO3/KB and LaMnO3/VX catalyst layers exhibited a superior oxygen reduction activity when compared to that of a conventional GDE with only one LaMnO3/KB catalyst layer. Pore size distribution and gas permeability measurements revealed that the LaMnO3/VX layer was more porous and had higher gas permeability than the LaMnO3/KB layer. These results suggest that the intermediate layer of LaMnO3/VX can efficiently supply oxygen to reaction sites dispersed in the LaMnO3/KB and LaMnO3/VX catalyst layers, which consequently leads to an improvement in the electrode performance. - Masayoshi Yuasa; Yoshiyuki Matoba; Noboru Yamazoe; Kengo ShimanoeJOURNAL OF THE CERAMIC SOCIETY OF JAPAN 118 1375 184 - 187 2010年03月 [査読有り]
In order to reduce the electric resistance of the WO3 sensing film fabricated from the ion-exchange method, lamellar-structured and Re-doped WO3 was prepared through the acidification method. The mixed solution of Na2WO4 and Re2O7 was dropped into the mixed solution of H2SO4 and HCHO. Then the obtained gel was deposited on alumina substrate with An electrode for thick film devices and calcined at 300 degrees C. The size of the Re-doped WO3 particles was smaller in one order in magnitude than that of the WO3 by the ion-exchange method. The electric resistance of Re-doped WO3 device in air showed minimum value at the 4 at% Re doping due to the increase in the donor density in the WO3 crystal. As a result, the Re-doped WO3 device exhibited low electric resistance less than 10(8) Omega even in the 800 ppb NO2. Such a low electric resistance device is suitable for the detection of the wide range of NO2. (C) 2010 The Ceramic society of Japan. All rights reserved. - Min-Hyun Seo; Masayoshi Yuasa; Tetsuya Kida; Jeung-Soo Huh; Kengo Shimanoe; Noboru YamazoeSENSORS AND ACTUATORS B-CHEMICAL 137 2 513 - 520 2009年04月 [査読有り]
Preparation and morphology control of TiO2 nanostructured films for gas sensor applications were investigated. To examine the effect of the morphology of sensing films on the sensing characteristics, TiO2 with different morphologies, nanoparticles and nanotubes, were used for the film preparation. TiO2 nanotubes were prepared by a hydrothermal treatment of TiO2 nanoparticles in a NaOH solution at 160, 200, and 230 degrees C for 24 h and subsequent washing with an HCl solution. Uniform sized TiO2 nanotubes of 1 mu m in length and 50 nm in diameter were formed at 230 degrees C. The sensing films composed of nanotubes prepared at 230 degrees C showed a high sensor response to toluene at 500 degrees C as compared with those composed of TiO2 nanoparticles. Scanning electron microscope (SEM) analysis and pore size distribution measurements indicated that the sensing films composed of the TiO2 nanotubes had a high porous morphology with a peak pore size of around 200 rim, which can promote the diffusion of toluene deep inside the films and improve the sensor response. The obtained results demonstrated the importance of microstructure control of sensing layers for improving the sensitivity to large size molecules like volatile organic compounds (VOCs). (C) 2009 Elsevier B.V. All rights reserved. - Tetsuya Kida; Takuya Minami; Shotaro Kishi; Masayoshi Yuasa; Kengo Shimanoe; Noboru YarriazoeSENSORS AND ACTUATORS B-CHEMICAL 137 1 147 - 153 2009年03月 [査読有り]
Mixed potential-type gas sensors with a BiCuVOx (Bi2Cu0.1V0.9O5.35) oxygen conductor fitted with composite electrodes made of perovskite-type oxide (La0.6Sr0.4Co0.8Fe0.2O3) and BiCuVOx, were tested for their organic gas sensing properties. A planar-type BiCuVOx-based device, in which thin sensing electrode and thick counter electrode are attached, exhibited good sensing characteristics to low ethanol concentrations (4-30 ppm) at 400 degrees C. The electromotive force (EMF) of the device had a linear relation to the logarithm of ethanol concentration. The 90% response and recovery times of the device were short, i.e., less than 1 min. Moreover, the planar structure Successfully eliminated any oxygen interference. The ethanol sensing mechanism is based on the mixed potential generation from the simultaneous anodic oxidation of ethanol and the cathodic reduction of oxygen, at the BiCuVOx/electrode interface. (c) 2008 Elsevier B.V. All rights reserved. - Masayoshi Yuasa; Takanori Masaki; Tetsuya Kida; Kengo Shimanoe; Noboru YamazoeSENSORS AND ACTUATORS B-CHEMICAL 136 1 99 - 104 2009年02月 [査読有り]
A reverse micelle method was investigated for preparing nano-sized PdO loaded on SnO(2) nanoparticles. PdO-SnO(2) nano-composite was prepared by precipitating Pd(OH)(2) and Sn(OH)(4) inside a reverse micelle. The microstructure and the gas sensing properties of obtained nanoparticles were investigated. Although the particle size of SnO(2) was as same as ca. 10 nm at each observed sample, the particle size of PdO got larger as increasing with loading amount of PdO because of agglomeration of PdO nanoparticles each other. As a result of the gas sensing measurement, it was found that the particle size of PdO on SnO(2) nanoparticle influences the gas sensing property closely. That is, the sensor response declined gradually with increasing the particle size of PdO although the maximum of the sensor response was obtained in PdO=0.1 mol%. In this method, small amount of PdO loading can be achieved as compared with PdO-loaded SnO(2) sensor prepared by the conventional impregnation method. (C) 2008 Elsevier B.V. All rights reserved. - Tetsuya Kida; Daisuke Takauchi; Ken Watanabe; Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeJournal of the Electrochemical Society 156 12 E187 - E191 2009年 [査読有り]
To explore oxygen permeable materials, oxygen permeation properties of partially A-site substituted BaFe O3-δ perovskites were investigated. Ba sites in BaFe O3-δ were substituted with cations such as Na, Rb, Ca, Y, and La by 5%. The partial substitution with Ca, Y, and La, whose ionic radii are smaller than that of Ba, succeeded in stabilizing a cubic perovskite structure that is a highly oxygen permeable phase, as revealed by X-ray diffraction analysis. This can be explained in terms of a decrease in the tolerance factor (t). Among the Ba0.95 M 0.05 Fe O3-δ (M = Na, Rb, Ca, Y, and La) membranes tested, Ba0.95 La0.05 Fe O3-δ showed the highest oxygen permeability at 600-930°C, owing to the stabilization of the cubic phase without the formation of impurity phases. From chemical analysis, the oxygen permeability of Ba1-x Lax Fe O 3-δ membranes was correlated with the amount of oxygen defects (δ) in the lattice. The oxygen permeation flux of Ba0.95 La0.05 Fe O3-δ membrane was significantly increased by reducing its thickness. Furthermore, a Ba0.975 La0.025 Fe O3-δ membrane exhibited good phase stability under He flow at elevated temperatures. The obtained results indicate the promising properties of Ba1-x Lax Fe O3-δ membranes as a cobalt-free material that has a high oxygen permeability, good phase stability, and low cost. © 2009 The Electrochemical Society. - Shotaro Kishi; Yuji Miyachi; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru YamazoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 156 11 J351 - J355 2009年 [査読有り]
To improve the stability of Na(3)Zr(2)Si(2)PO(12) (NASICON)-based potentiometric CO(2) sensors fitted with carbonate/Au layers (sensing electrode), mixed conducting oxides of Li(0.4)CoO(2) and Na(0.6)CoO(2) were examined for their applicability to solid-reference electrodes in terms of their stability against CO(2) and humidity. Compared with the Na(0.6)CoO(2) electrode, the Li(0.4)CoO(2) electrode showed far better stability against CO(2). When the Li(0.4)CoO(2) electrode was coated with a layer of glass, the electrode showed no response to CO(2) (200-2000 ppm) and little interference from humidity [21-86% relative humidity (RH)] at 450 degrees C. A CO(2) sensor device using Li(2)CO(3)-BaCO(3) and a glass-coated Li(0.4)CoO(2) showed stable electromotive force (emf) responses to CO(2) in humid air (86% RH) at 450 degrees C. The emf of the device was also stable even after it was exposed to humid air (86% RH) containing CO(2) (400 ppm) at room temperature for 1-2 days. The present study indicates the promising features of the glass-coated Li(0.4)CoO(2) as a stable solid-reference material for NASICON-based CO(2) sensors. (C) 2009 The Electrochemical Society. [DOI:10.1149/1.3216044] All rights reserved. - Kengo Shimanoe; Aya Nishiyama; Masayoshi Yuasa; Tetsuya Kida; Noboru YamazoePROCEEDINGS OF THE EUROSENSORS XXIII CONFERENCE 1 1 212 - + 2009年 [査読有り]
To fabricate more excellent NO2 sensor with high sensor response and good linearity between the sensor response and NO2 concentration, the microstructure of WO3 lamellae was controlled by adding nano-particles of SnO2. It was found that the sintering of WO3 lamellae was inhibited by adding nano-particles of SnO2. The device using WO3 lamellae added a small amount of SnO2 nano-particles had the highest sensor response, exhibiting a high sensor response (S = 60-540) even to dilute NO2 (100-1000 ppb) in air at 200 degrees C. - Ken Watanabe; Daisuke Takauchi; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeJournal of the Electrochemical Society 156 5 E81 - E85 2009年 [査読有り]
Partially Zr-substituted BaFe 1-yZr yO 3-δ membranes were developed as a Co-free oxygen permeable membrane. In order to stabilize the cubic perovskite structure, Fe sites in BaFeO 3-δ were partially substituted with Zr 4+. In the substitution range of y=0.01-0.1, the cubic perovskite structure was stabilized even at room temperature. Among the membranes prepared, a BaFe 0.975Zr 0.025O3 -δ material (y=0.025) showed the highest oxygen permeation flux of 1.30 cm3 (standard temperature pressure) min-1 cm-2 at 930°C under an air/He gradient. The oxygen permeation flux was higher than that of partially Ce-substituted BaFe 1-yCe yO 3-δ membranes reported previously. From the results obtained by chemical and scanning electron microscope analyses, it appears that the oxygen permeability for BaFe 1-yZr yO 3-δ membranes was well correlated with the amount of oxygen defects in the lattice as well as the grain size. In addition, the oxygen permeation flux of the BaFe 0.975Zr 0.025O3 -δ membrane was significantly increased after decreasing the thickness of the membrane from 2.0 to 0.4 mm. For thin membranes (0.4-1.0 mm), the thickness dependence of the oxygen permeability deviated from the Wagner equation, suggesting that the oxygen permeation of BaFe 0.975Zr 0.025O3 -δ is controlled by not only bulk diffusion of oxide ions but also their surface reactions. © 2009 The Electrochemical Society. - Tetsuya Kida; Aya Nishiyama; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeSENSORS AND ACTUATORS B-CHEMICAL 135 2 568 - 574 2009年01月 [査読有り]
Tungsten trioxide (WO3) was prepared by acidification of Na2WO4 with acid solutions such as H2SO4, HCI, and HNO3 (pH 0.5 to -0.8)and tested forits NO2 sensing properties. Acidification with strong acid solutions (pH -0.5, -0.8) was found to produce lamellar-structured WO3 particles, which consisted of nano-sized crystalline plates that were 100-350nm in lateral size and 20-50nm in thickness, as observed by XRD and SEM analyses. The sizes of the primary and secondary particles were decreased by decreasing the pH of the acid solution used. This was accompanied by an increase in the specific surface area. The NO2 responses of the prepared WO3 lamellae were dependent on their morphology. The device using smaller WO3 lamellae prepared with a H2SO4 solution (pH -0.8) had the highest sensor response, exhibiting a high sensor response (S=150-280), even to dilute NO2 (50-1000 ppb) in air at 200 C. The use of smaller lamellae resulted in a decrease in the electrical resistance of the device, probably due to intimate contact between smaller lamellar particles, which allowed the detection of NO2 in a rather wide concentration range. In addition, the developed device showed high NO2 selectivity without substantial interference from NO. (c) 2008 Elsevier B.V. All rights reserved. - Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeChemistry Letters 38 1 94 - 95 2009年01月 [査読有り]
To achieve a high oxygen permeation rate at medium and high temperature, an asymmetrically structured membrane, in which a thin dense layer (30μm) made of La 0.6Ca 0.4CoO 3-δ (LCC) and BaFe 0.975Zr 0.025O 3-δ (BFZ) was formed on a porous LCC support, was fabricated and tested for its oxygen permeability. The oxygen permeation flux significantly increased by mixing BFZ with LCC and reached a fairly high value of 1.60 cm 3 min -1 cm -2 even at 780°C. Copyright © 2009 The Chemical Society of Japan. - Masami Mori; Yuji Iwamoto; Makiko Asamoto; Yoshiteru Itagaki; Hidenori Yahiro; Yoshihiko Sadaoka; Satoko Takase; Youichi Shimizu; Masayoshi Yuasa; Kengo Shimanoe; Hajime Kusaba; Yasutake TeraokaCATALYSIS TODAY 139 1-2 125 - 129 2008年12月 [査読有り]
The perovskite-type SmFeO(3) powders were prepared by the four different methods, named decomposition method of heteronuclear cyano complexes (CN), polymer precursor method (PP), reverse micelle method (RM) and reverse homogenous precipitation method (RHP), and their catalytic activities were evaluated with a CO oxidation reaction. The surface areas and the surface chemical compositions of Sm, Fe, O and C were strongly dependent on the preparation methods and calcination temperatures. On the basis of such the characteristics on the surface the factors controlling the catalytic activity are discussed. (C) 2008 Elsevier B.V. All rights reserved. - H. Inoue; M. Yuasa; T. Kida; K. Shimanoe; N. YamazoeSENSOR LETTERS 6 6 912 - 915 2008年12月 [査読有り]
A FET type NO(2) sensor fitted with NaNO(2)-RU/WO(3) as a new auxiliary (sensing) layer was fabricated and tested for its NO(2) sensing properties. The developed device responded to dilute NO(2) of ppb concentrations (20-300 ppb) at 130 and 170 degrees C. The sensor signal (V(GS); gate-source voltage) is linearly proportional to the logarithm of NO(2) Concentration, exhibiting the Nernstian response. It was found that the response speed was improved at lower operating temperature by adding Ru to the NaNO(2)WO(3) auxiliary layer. It was suggested that Ru nanoparticles deposited in the auxiliary layer with a porous morphology improved the rate of adsorption and electrochemical reaction of NO(2) occurring at the interface between the Au gate electrode and auxiliary layer. - Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeCHEMISTRY OF MATERIALS 20 22 6965 - 6973 2008年11月 [査読有り]
To achieve high-efficiency oxygen permeation using mixed (ionic and electronic) conducting perovskite-type oxides, we examined asymmetric-structured membranes of La0.6Ca0.4CoO3 in which a thin dense membrane was deposited on a porous support. The La0.6Ca0.4CoO3 porous support was fabricated using irregular-shaped precursor particles prepared through an oxalate method. The fabricated support had good gas permeability and thermal stability, showing sufficient properties as a support for dense thin membranes. A dense membrane of 10 mu m thickness was successfully formed on the porous support by coating a La0.6Ca0.4CoO3 Slurry and subsequent densification by sintering. The deposited thin membrane was gastight and free from clacks, as revealed by gas permeation tests and SEM observations. The asymmetric membrane exhibited a high oxygen permeability of 1.66 cm(3) (STP, standard temperature and pressure) min(-1) cm(-2) at 930 degrees C, which was four times higher than that of a typical sintered-disk type membrane with 1200/mu m thickness, demonstrating its feasibility as a high-performance oxygen separation membrane. - Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeSOLID STATE IONICS 179 27-32 1377 - 1381 2008年09月 [査読有り]
An asymmetric-structured membrane, in which a dense thin La0.6Ca0.4CoO3 layer of 10 mu m was deposited on porous La0.6Ca0.4CoO3 support by a slurry dropping method, were tested for its oxygen permeability at 630-930 degrees C. In order to increase the oxygen permeability, porous La0.6Ca0.4CoO3 and SrCo0.8Fe0.2O3-delta oxygen evolution layers were attached on the dense layer. It was found that the asymmetric structured membranes with the porous oxygen evolution layers showed remarkably higher oxygen permeability as compared with a conventional sintered disk-type membrane (1200 mu m). This suggests that oxygen permeation through membranes of 10 mu m in thickness is rate-determined by both bulk O2- diffusion and oxygen evolution reaction. The maximum oxygen permeability reached 4.77 cm(3) (STP) min(-1) cm(-2) (3.54 x 10(-6) Mol cm(-2) s(-1)) at 930 degrees C for the asymmetric membrane with porous La0.6Ca0.4CoO3 oxygen evolution layer of 10 mu m in thickness (STP= Standard Temperature and Pressure). Further improvements in the oxygen permeability would be achieved through control of the micro-structure of the oxygen evolution layers. (C) 2008 Elsevier B.V. All rights reserved. - Tetsuya Kida; Toru Kuroiwa; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeSENSORS AND ACTUATORS B-CHEMICAL 134 2 928 - 933 2008年09月 [査読有り]
A high-speed gas-switching system. in which a low-dead volume chamber (0.6 cm(3)) was connected to a gas flow apparatus equipped with a high-speed gas-switching valve operative at a rate of 30 ms, was designed to investigate the real response and recovery properties of semiconductor gas sensors. The developed system allowed rapid replacement of the gas atmosphere in the chamber where a gas sensor device was placed within 0.3 s. it was revealed that the response speed of the sensor device based on a SnO2 porous film (pore size at maximum population: 37 nm) was remarkably fast, reaching a response time of less than 1 s for H-2 and CO detection at 250 and 350 degrees C. This suggests that the diffusion and surface reaction of H-2 and CO are quite fast in the porous film. On the other hand, the recovery speed was not comparably fast and the resistance of the device did not recover to the original state within 20 s after switching the gas atmosphere in the chamber from the sample gases to air. This is possibly due to the slow desorption of the H2O and CO2 that were formed by the surface reaction of H-2 and CO, respectively with the adsorbed oxygen on SnO2. (c) 2008 Elsevier B.V. All rights reserved. - Tetsuya Kida; Takuya Minami; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeELECTROCHEMISTRY COMMUNICATIONS 10 2 311 - 314 2008年02月 [査読有り]
A potentiometric organic gas sensor-based on BiCuVOx (Bi2Cu0.1V0.9O5.35) solid electrolyte was investigated. Electromotive force (EMF) of the sensor device, in which a BiCuVOx sintered disk is fitted with composite electrodes of BiCuVOx/La0.6Sr0.4Co0.78Ni0.02- Fe0.2O3, was measured in the presence of various organic gases at 350-500 degrees C. The device responded to volatile organic compounds (VOC) of formaldehyde, toluene, and ethanol, but showed little sensitivities to methane, propane, propene, CO, and H-2. The EMF of the sensor was linear to the logarithm of organic gas concentrations, suggesting that the generation of EMF is explained on the basis of the mixed potential theory. The observed good sensitivity toward VOC derives from the good oxide ion conductivity of BiCuVOx and proper electro-catalytic activity of the perovskite oxide electrode even at lower temperature. (c) 2008 Elsevier B.V. All rights reserved. - Tetsuya Kida; Shotaro Kishi; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 155 5 J117 - J121 2008年 [査読有り]
To improve the stability of a NASICON (Na3Zr2Si2PO12; Na+ conductor)-based potentiometric CO2 sensor under humid conditions, a composite of BiCuVOx (Bi2Cu0.1V0.9O5.35) and perovskite-type oxide (La0.6Sr0.4Co0.78Ni0.02Fe0.2O3) was used as a solid-reference electrode. The CO2 sensing properties and stability of a NASICON-based planar device fitted with Li2CO3-BaCO3 (auxiliary phase) and the composite reference electrode were examined under humid conditions. The planar device mounted on an alumina substrate with a Pt heater showed stable electromotive force (emf) responses to changes in the CO2 concentration (100-400 ppm) at 400 and 450 degrees C in humid air without degradation. The sensor device also exhibited a good warming-up characteristic, i.e., the emf of the device quickly reached a steady and constant value when the sensor operation was restarted even after the sensor was exposed to humid air (86% relative humidity at 25 degrees C) at room temperature for a long time. (C) 2008 The Electrochemical Society. - Shotaro Kishi; Masayoshi Yuasa; Tetsuya Kida; Vilho Eelis Lantto; Kengo Shimanoe; Noboru YamazoeJOURNAL OF THE CERAMIC SOCIETY OF JAPAN 115 1347 706 - 711 2007年11月 [査読有り]
A laminated solid-reference electrode of BiCuVOx (Bi2Cu0.1V0.9O5.35)/perovskite-oxide (La0.6Sr0.4Co0.78Ni0.02 Fe0.2O3) was developed for a NASICON (Na3Zr2Si2PO12; Na+ conductor)-based potentiometric CO2 sensor. The fabricated electrochemical cell expressed as, CO2, O-2/Au (sensing electrode)/Li2CO3-BaCO3 (auxiliary phase)/NASICON/BiCuVOx/BiCuVOx-perovskite-oxide (reference electrode)/O-2, responded well to changes in CO2 concentration (100-400 ppm) at 450 degrees C under high humid conditions (88%RH). The potential of the developed reference electrode was stable and exhibited little interference by water vapor. Furthermore, the reference electrode potential did not response to CO2 even after the BiCuVOx layer was contaminated with carbonate, indicating a good stability of BiCuVOx against CO2. The sensor device attached with the laminated solid-reference electrode showed a good warming-up characteristic, i.e., the electromotive force (EMF) of the device reached a steady and constant value when the sensor operation is re-started even after the sensor was exposed to humid air containing CO2 at room temperature. - Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru YarnazoeCATALYSIS TODAY 126 3-4 313 - 319 2007年08月 [査読有り]
Two ways of reverse micelle (RM) method were investigated to prepare carbon-supported nano-sized LaMnO3 with high oxygen reduction activity. Hydrolysis precipitation in reverse micelle (HP-RM) method could give nano-sized particles of LaMnO3 easily because the particles size decreased with decreasing R-w (=[H2O]/[surfactant]) value as well as nitrate concentration. The electrode prepared by the resulting particles showed high oxygen reduction activity as compared with that prepared by mechanical mixing-method. Furthermore, it was found that new RM method (ROP-RM) using KMnO4 as an oxidizer gave higher oxygen reduction activity than the HP-RM method, although particle size of LaMnO3 obtained by the ROP-RM method was almost same as that by RM-HP method. (C) 2007 Published by Elsevier B.V. - Jerzy P. Lukaszewicz; Shin Imaizumi; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeJOURNAL OF MATERIALS SCIENCE 41 19 6215 - 6220 2006年10月 [査読有り]
A novel method by combining NAC-FAS (NAnometer-sized Crystal Formation in Alcoholic Solutions) method and mechanical milling treatment was successfully applied for dispersing perovskite type oxide LaMnO3 finely on carbon support. Microscopic observation revealed that nano-sized oxide particles were dispersed fairly well in the carbon support. The gas diffusion-type electrode prepared by means of reducing number and quantity of chemicals exhibited more excellent oxygen reduction activity than the electrodes containing LaMnO3 prepared by RHP (Reverse Homogeneous Precipitation) method. It allowed current density as high as 300 mA cm(-2) at -80 mV (vs. Hg/HgO) in 8 M KOH at 60 degrees C under air flow. - M. Yuasa; G. Sakai; K. Shimanoe; Y. Teraoka; N. YamazoeJournal of the Electrochemical Society 151 10 A1690 - A1695 2004年 [査読有り]
La1-xSrxMn0.8Fe0.2O 3+δ (x = 0-0.4) and La0.8Sr0.2Mn 1-yFeyO3+δ (y = 0-0.8) supported on carbon were successfully prepared by a reverse micelle method. Aqueous solutions dissolving nitrates of constituent metals of the intended oxides and tetramethylammonium hydroxide (precipitant) were separately transformed into reverse micelle dispersions by using poly(oxyethylene)5-lauryl ether (surfactant) and cyclohexane (oil). These dispersions were mixed together to derive a reverse micelle dispersion containing mixed hydroxides as precursors of the oxides, into which carbon powder suspended in cyclohexane was put under agitation. The suspension was destabilized with ethanol, and the resulting precipitate (carbon-supported precursors) was calcined in N2 atmosphere to prevent the carbon matrix from being combusted. Single-phase oxides supported on carbon were obtained by calcination at 700°C unless the oxides were free of Fe. Oxygen reduction activity of the gas-diffusion-type electrodes fabricated with thus prepared carbon-supported oxides increased sharply and decreased gradually with increasing x and y, respectively. Among the prepared oxides, the greatest activity, i.e., 500 mA/cm2 at -67 mV (vs. Hg/HgO electrode) in 9 M NaOH at 85°C under O2 flow, was achieved by the oxide with x = 0.4 and y = 0.2. Optimal loading on carbon as well as durability under oxygen reduction conditions were tested for selected oxides. 17 wt % La0.6Sr0.4Mn0.8Fe 0.2O3+δ loading electrode was compared with 27.7 wt % Pt-loading electrode in an oxygen reduction activity, and it was found that the former electrode was better than the Pt loading electrode. © 2004 the electrochemical society All rights reserved. - M Yuasa; G Sakai; K Shimanoe; Y Teraoka; N YamazoeJOURNAL OF THE ELECTROCHEMICAL SOCIETY 151 9 A1477 - A1482 2004年 [査読有り]
Reverse micelle (RM) based synthesis of carbon-supported perovskite type oxide (LaMnO3) was investigated. By using cyclohexane as oil phase, six kinds of nonionic surfactants were tested for the formation of the revere micelle dispersions containing aqueous solutions of mixed nitrates of La3+ and Mn2+ (RM-N) and tetramethylammonium hydroxide (RM-A) at the water/surfactant molar ratio (R-W) of 3. RM-A was found to be more difficult to form compared with RM-N or the RM containing pure water. At a temperature range of 5-25degreesC, it was given only by the surfactants with hydrophilic-lipophilic balance (HLB) values of 10.0-10.9. Phase diagrams of oil-surfactant-alkaline solution (or pure water) were constructed at 5 and 15degreesC for the best two surfactants, i.e., poly-(oxyetylene)(6)-nonylphenyl ether and poly-(oxyetylene)(5)-lauryl ether. Mixing RM-N and RM-A together gave the RM containing a mixed hydroxides-precursor (RM-P), which was further converted into carbon-supported LaMnO3 through a series of treatments including the addition of carbon powder and calcination in N-2 atmosphere at 600degreesC. The size of RM-P as well as that of the LaMnO3 grains supported on carbon could be controlled well by selecting R-W. The carbon-supported LaMnO3 proved to be highly active for the electrochemical reduction of oxygen. (C) 2004 The Electrochemical Society.
書籍
- 金属空気二次電池-要旨技術の開発動向と応用展望-久保佳実; 池澤篤憲; 安岡茂和; 森良平; 湯浅雅賀 (担当:分担執筆範囲:第２章第１節 pp.79- 93「グラフェンを用いた正極の開発」)サイエンス＆テクノロジー 2021年01月
- 化学工業(担当:分担執筆範囲:半導体ガスセンサの医療分野への応用)2015年05月
- 電気化学／インピーダンス 測定のノウハウと正しい データ解釈湯浅雅賀 (担当:共著範囲:第３章第３節 pp.362-365「ガス拡散型電極の電位測定法」)技術情報協会 2013年05月
- 触媒調製ハンドブック湯浅雅賀 (担当:共著範囲:第２編３章０９節 pp.188-189 「ペロブスカイト型 酸化物の合成（逆ミセル法）」)エヌ・ティー・エス 2011年04月
- 電気化学および工業物理化学湯浅雅賀; 島ノ江憲剛 (担当:分担執筆範囲:第78巻7号, pp629-63, 「分極曲線・サイクリックボル タンメトリー（15）ガス拡散電極 空気電池用極」)2010年07月
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- Oxygen reduction reaction on N-doped activated carbons obtained from chitin and chitosan [通常講演]A. Ilnicka; J.P. Lukaszewicz; K. Shimanoe; M. Yuasa28th International Conference on Diamond and Carbon Materials, Gothenburg, スウェーデン王国 2017年 口頭発表（一般）
- キトサン由来窒素ドープカ ーボンを用いたガス拡散型電極 の酸素還元活性 [通常講演]中野 皓太; 奥田龍之介; 湯浅 雅賀; 西堀 麻衣子; 島ノ江 憲剛電気化学会第83回大会, 吹田市 大阪大学 2016年 口頭発表（一般）
- 遠賀川水辺館を通しての子 供たちへの環境教育 [通常講演]安部雄希; 末廣優一; 湯浅 雅賀福岡県環境教育学会 第19回年会, 飯塚市, 近畿大学 2016年 口頭発表（一般）
- 金属空気二次電池の実現に 向けた電極材料の探索 [通常講演]湯浅 雅賀; 末永 侑子第15回近畿大学環境科学研究会, 紀伊市, 近畿大学 2016年 口頭発表（一般）
- 酸化チタン微粒子を用いた 金属空気二次電池用空気極の 検討 [通常講演]湯浅 雅賀日本セラミックス協会 第29回秋季シンポジウム, 東広島市 広島大学 2016年 口頭発表（一般）
- SbドープSnO2の加湿雰囲気化 における応答挙動 [通常講演]佐々木美幸; 末松昂一; 湯浅雅賀; 島ノ江憲剛第58回化学センサ研究会 横浜市 横浜国立大学 2015年 口頭発表（一般）
- 混合導電体を用いた酸素分 離膜におけるLa1-xSrxFeO3-δ 酸素放出層の検討 [通常講演]三谷康人; 達城裕樹; 湯浅雅賀; 島ノ江憲剛第82回電気化学会 横浜市 横浜国立大学 2015年 口頭発表（一般）
- 加湿雰囲気下におけるガス センサの感度改善に向けたSnO2 へのAl 添加効果 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 島ノ江憲剛日本セラミックス協会 第28回秋季シンポジウム 富山市 富山大学 2015年 口頭発表（一般）
- LaNiO3 系ペロブスカイト型 酸化物を用いた金属−空気電池 用二元機能空気極担体の検討 [通常講演]伊舎堂雄二; 湯浅雅賀; 西堀麻衣子; 島ノ江憲剛2015年電気化学秋季大会 深谷市 埼玉工業大学 2015年 口頭発表（一般）
- Carbon-supported perovskite nanoparticle catalyst for metal-air battery, fuel cell and brine electrolysis [基調講演] [通常講演]湯浅雅賀Joint International Symposium on 「Regional Revitalization and Innovation for Social Contribution」 And 「e-ASIA Functional Materials and Biomass Utilization 2015」 田川市 福岡県立大学 2015年 口頭発表（基調）
- SbドーブSnO2ガスセンサの 応答特性における水蒸気の影響 [通常講演]佐々木 美幸; 末松 昂一; 湯浅 雅賀; 木田 徹也; 島ノ江 憲剛トークシャワー・イン・九州2014 2014年09月 ポスター発表
- 色素増感Ru錯体を導入した可視光応答型光触媒の貴金属イオン還元 [通常講演]隈元 康太; 湯浅 雅賀; 木田 徹也; 島ノ江 憲剛トークシャワー・イン・九州2014 2014年09月 ポスター発表
- 湿式法による太陽電池用 Cu2-xZn1+xSnS4ナノ結晶の調製 [通常講演]堀田 佳佑; 湯浅 雅賀; 木田 徹也; 島ノ江 憲剛第4回九州若手セラミックフォーラム＆第44回窯業基礎九州懇話会 2014年09月 ポスター発表
- 伊舎堂 雄二; 湯浅 雅賀; 島ノ江 憲剛第4回九州若手セラミックフォーラム＆第44回窯業基礎九州懇話会 2014年09月 ポスター発表
- 有機無機ハイブリッド光 触媒を用いた貴金属粒子の 合成と回収 [通常講演]古相 博正; 湯浅 雅賀; 木田 徹也; 島ノ江 憲剛第52回セラミックス基礎科学討論会 名古屋市 ウインクあいち 2014年 口頭発表（一般）
- 接触燃焼式MEMS型メタン センサ用触媒の検討 [通常講演]島田 元気; 末松 昂一; 湯浅 雅賀; 木田 徹也; 島ノ江 憲剛第56回化学センサ研究発表会 吹田市 関西大学 2014年 口頭発表（一般）
- 加湿雰囲気下における低濃 度酸素吸着に伴うSnO2ガスセ ンサ の電気的特性 [通常講演]末松 昂一; 湯浅 雅賀; 木田 徹也; 山添 ?; 島ノ江 憲; 剛第56回化学センサ研究発表会 吹田市 関西大学 2014年 口頭発表（一般）
- Gas Sensing Properties of Pd-Ioaded SnO2 Nanoparticles Gas Sensor in the Presence of Water Vapor [通常講演]馬 楠; 末松 昂一; 湯浅 雅賀; 木田 徹也; 島ノ江 憲剛第56回化学センサ研究発表会 吹田市 関西大学 2014年 口頭発表（一般）
- Oxygen reduction activity of carbon-supported Pt-LaMnO3 catalysts [通常講演]Masayoshi Yuasa; Shohei Mochizuki; Kengo ShimanoePre-Symposium of TOCAT7 in Fukuoka, 春日市 九州大学 2014年 口頭発表（一般）
- Air electrode using perovskite-type oxides for metal air batteries [招待講演] [通常講演]Masayoshi Yuasa; Kengo Shimanoe2014 Collaborative Conference on 3D &Materials Research, Incheon (Korea), HoloDigilog Human Media Research Center 2014年
- Influence of Water Vapor on the Sensing Properties for Pd-loaded SnO2 Nanoparticles Gas Sensor [通常講演]Nan Ma, Koichi; Suematsu; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeThe IUMRS International Conference in Asia 2014, 福岡市 福岡大学 2014年 口頭発表（一般）
- The influence of water vapor on Sb-doped SnO2 gas sensor [通常講演]Miyuki Sasaki; Koichi; Suematsu; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeThe IUMRS International Conference in Asia 2014, 福岡市 福岡大学 2014年 口頭発表（一般）
- Cu2ZnSnS4 Nanocrystal Solar Cells Using Solution Processes [通常講演]Keisuke Horita; Satoshi Suehiro; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeThe IUMRS International Conference in Asia 2014, 福岡市 福岡大学 2014年 口頭発表（一般）
- Oxygen Reduction Activity of Noble Metal-LaMnO3 Catalysts for Metal Air Batteries [通常講演]Masayoshi Yuasa; Shohei Mochizuki; Tetsuya Kida; Kengo ShimanoeThe IUMRS International Conference in Asia 2014, 福岡市 福岡大学 2014年 口頭発表（一般）
- Effect of Water Vapor on Gas Sensing for MEMS Type Sensor Using Pd-loaded SnO2 Nanoparticles [通常講演]馬楠; 末松昂一; 湯浅雅賀; 木田徹也; 島ノ江憲剛第57回化学センサ研究発表会 札幌市 北海道大学 2014年 口頭発表（一般）
- Sensing Behavior and Mechanism of Pd-Loaded WO3 Sensors to Reducing Gases [通常講演]花中秋; 湯浅雅賀; 木田徹也; 山添?; 島ノ江憲剛第57回化学センサ研究発表会 札幌市 北海道大学 2014年 口頭発表（一般）
- LaMnO3-Pt共担持カーボン 電極の酸素還元活性 [通常講演]湯浅雅賀; 望月祥平; 島ノ江憲剛2014年電気化学秋季大会 札幌市 北海道大学 2014年 口頭発表（一般）
- 接触燃焼式マイクロメタンセンサに用いる触媒材料の探索 [通常講演]島田元気; 湯浅雅賀; 木田徹也; 島ノ江憲剛第３回九州若手セラミックフォーラム＆第43回窯業基礎九州懇話会 2013年09月 ポスター発表
- SbドープSnO2半導体ガス センサの加湿雰囲気での応答挙動 [通常講演]佐々木美幸; 湯浅雅賀; 木田徹也; 島ノ江憲剛第３回九州若手セラミックフォーラム＆第43回窯業基礎九州懇話会 2013年09月 ポスター発表
- Pt-LaMnO3触媒を用いたガス 拡散型電極の酸素還元特性 [通常講演]望月祥平; 湯浅雅賀; 木田徹也; 島ノ江憲剛第３回九州若手セラミックフォーラム＆第43回窯業基礎九州懇話会 2013年09月 ポスター発表
- Cu2-xZn1+xSnS4ナノ結晶を 用いた半導体デバイスの作製 [通常講演]堀田佳佑; 末廣智; 湯浅雅賀; 木田徹也; 島ノ江憲剛第３回九州若手セラミックフォーラム＆第43回窯業基礎九州懇話会 2013年09月 ポスター発表
- 界面活性剤修飾ケイタングステン酸を光触媒とした貴金属粒子の合成と回収 [通常講演]古相博正; 湯浅雅賀; 木田徹也; 島ノ江憲剛第３回九州若手セラミックフォーラム＆第43回窯業基礎九州懇話会 2013年09月 ポスター発表
- Cu2-xZn1+xSnS4ナノ結晶の湿式合成と半導体デバイスへの応用 [通常講演]堀田佳佑; 末廣智; 湯浅雅賀; 木田徹也; 島ノ江憲剛第50回化学関連支部合同九州大会 2013年07月 ポスター発表
- Study of H2O/D2O Isotope Exchange on SnO2 Sensing Materials using Modulation Excitation DRIFTS [通常講演]崔中起; PavelkoRoman; 浦川篤; 湯浅雅賀; 木田徹也; 山添?; 島ノ江憲剛第54回化学センサ研究発表会 仙台市 東北大学 2013年 口頭発表（一般）
- Study on Gas Sensing Properties and Modulation Excitation DRIFTS for Fe- modified SnO2 [通常講演]PavelkoRoman; 崔中起; 浦川篤; 湯浅雅賀; 木田徹也; 山添?; 島ノ江憲剛第54回化学センサ研究発表会 仙台市 東北大学 2013年 口頭発表（一般）
- Operando DRIFTS Study on H2O/D2O Exchange over SnO2 Materials in the Presenceof CO [通常講演]Roman Pavelko; Joon-Ki Choi; Atsushi Urakawa; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe5th GOSPEL Workshop: Gas sensor based on semiconducting metal oxides-basic understanding&application field 2013年 口頭発表（一般）
- Fe3+-modification of SnO2 and their surface characteristics under humid condition [通常講演]Joon-Ki Choi; Roman; Pavelko; Atsushi Urakawa; Koichi Suematsu; Masayoshi Yuasa; Tetsuya Kida; Noboru; Yamazoe; Kengo Shimanoe5th GOSPEL Workshop: Gas sensor based on semiconducting metal oxides-basic understanding&application field 2013年 口頭発表（一般）
- Oxygen adsorption properties on the SnO2- based nano particles in humid atmosphere [通常講演]Koichi Suematsu; Miyuki Sasaki; Kazuya Kodama; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe5th GOSPEL Workshop: Gas sensor based on semiconducting metal oxides-basic understanding&application field 2013年 口頭発表（一般）
- Gas sensing properties of WO3 in the volume depletion state [通常講演]Zhongqiu Hua; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe5th GOSPEL Workshop: Gas sensor based on semiconducting metal oxides-basic understanding&application field 2013年 口頭発表（一般）
- 半導体ガスセンサの材料 設計指針 (1)SnO2粒子表面 へのガス吸着 [通常講演]末松 昂一; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛日本セラミックス協会 第26 回秋季シンポジウム 長野市 信州大学 2013年 口頭発表（一般）
- 半導体ガスセンサの材料 設計指針(2)Sb ドープSnO2 センサの応答特性 [通常講演]佐々木美幸; 末松昂一; 湯浅雅賀; 木田徹也; 島ノ江 憲剛日本セラミックス協会 第26 回秋季シンポジウム 長野市 信州大学 2013年 口頭発表（一般）
- Material design of semiconductor gas sensors. [3] Water vapor effect on Pd-loaded SnO2 nanoparticles gas sensor [通常講演]馬楠; 末松昂一; 湯浅雅賀; 木田徹也; 島ノ江憲剛日本セラミックス協会 第26 回秋季シンポジウム 長野市 信州大学 2013年 口頭発表（一般）
- Material design of semiconductor gas sensors. [4] Gas adsorption behavior on Pd-loaded WO3 nanoparticles gas sensor [通常講演]花中秋; 湯浅雅賀; 木田徹也; 山添?; 島ノ江憲剛日本セラミックス協会 第26 回秋季シンポジウム 長野市 信州大学 2013年 口頭発表（一般）
- 硫化物ナノ結晶をベースと する塗布型太陽電池−アルキ ル化剤を用いる環境作成 [通常講演]末廣智; 堀田佳佑; 田中徹; 藤田克彦; 湯浅雅賀; 木田徹也; 島ノ江憲剛2013年電気化学会秋季大会 東京都目黒区 東京工業大学 2013年 口頭発表（一般）
- Fabrication of Nanoparticular Gas Sensing Films with Controlled Pore Sizes Using SnO2 Nanoparticles Synthesized by a Hydrothermal Method [通常講演]Tetsuya Kida; Shuhei; Fujiyama; Koichi Suematsu; Masayoshi Yuasa; Kiyoshi Kanie; Atsushi Muramatsu; Kengo ShimanoeThe 10th Asian Conference on Chemical Sensors, Chiang Mai (Thailand), The Empress Hotel 2013年 口頭発表（一般）
- Water vapor efffect Pd- loaded SnO2 nanoparticles gas sensor [通常講演]Nan Ma, Koichi; Surematsu; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeThe 10th Asian Conference on Chemical Sensors, Chiang Mai (Thailand), The Empress Hotel 2013年 口頭発表（一般）
- Oxygen adsorption behavior on Pd-loaded lamellar WO3 nanoparticles [通常講演]Zhongqiu Hua; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeThe 10th Asian Conference on Chemical Sensors, Chiang Mai (Thailand), The Empress Hotel 2013年 口頭発表（一般）
- Exploration of Catalytic Combustion Materials for Methane Sensor [通常講演]Genki Shimada; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeThe 30th Japan-Korea International Seminar on Ceramics, 北九州市 北九州国際会議場 2013年 口頭発表（一般）
- Highly Pd-Dispersed SnO2 Cluster Sol and Its Gas Sensing Properties for a MEMS Type Sensor [通常講演]Koichi Suematsu; Yuka; Shin; Miyuki Sasaki; Genki; Shimada; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeThe 30th Japan-Korea International Seminar on Ceramics, 北九州市 北九州国際会議場 2013年 口頭発表（一般）
- The dependence of sensor repsonse on the concentrations of Fe ions for Fe-modified SnO2 [通常講演]Joong-Ki Choi; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo; ShimanoeThe 30th Japan-Korea International Seminar on Ceramics, 北九州市 北九州国際会議場 2013年 口頭発表（一般）
- Oxygen reduction activity of GDE using carbon-supported Pt-LaMnO3 catalyst [通常講演]Shohei Mochizuki; Masayoshi Yuasa; Tetsuya Kida; Kengo ShimanoeThe 30th Japan-Korea International Seminar on Ceramics, 北九州市 北九州国際会議場 2013年 口頭発表（一般）
- Perovskite-type Oxide as an Electrocatalyst for the Metal Air Battery [招待講演] [通常講演]Masayoshi Yuasa; Naoki Tachibana; Kengo ShimanoeThe 7th Asian Conference on Electrochemical Power Sources, 大阪市 千里ライフサイエンスセンター 2013年
- Fabrication of CuZnSnS4 based solar cells using nanocrystals [通常講演]Satoshi Suehiro; Masayoshi Yuasa; Tooru Tanaka; Katsuhiro Fujita; Satoshi Hata; Tetsu Kida; Kengo ShimanoePacific Rim Meeting on Electrochemical and Solid-State Science 2012年09月 ポスター発表
- Pd-V2O5担持SnO2ガスセンサ の応答特性 [通常講演]児玉和也; 湯浅雅賀; 木田徹也; 島ノ江憲剛第49回化学関連支部合同九州大会 2012年06月 ポスター発表
- Preparation of Pd-loaded Lamellar WO3 particles for VOC Gas Sensing [通常講演]花 中秋; 湯浅雅賀; 木田徹也; 山添 曻; 島ノ江憲剛第49回化学関連支部合同九州大会 2012年06月 ポスター発表
- Cu2ZnSnS4ナノ結晶太陽電池 の作製とそのデバイス評価 [通常講演]末廣 智; 湯浅雅賀; 田中 徹; 藤田克彦; 木田徹也; 島ノ江憲剛第49回化学関連支部合同九州大会 2012年06月 ポスター発表
- Material design for high-sensitive semiconducting gas sensors- preparation of Pd-loaded SnO2 cluster sols [通常講演]Kengo Shimanoe; Yuka Shin; Koichi Suematsu; Masayoshi Yuasa; Tetsuya KidaThe 14th International Meeting on Chemical Sensors 2012年05月 ポスター発表
- リチウム−空気電池用酸素 還元電極の微細構造制御と 電池特性 [通常講演]松好 翼; 湯浅雅賀; 木田徹也; 島ノ江憲剛セラミックス基礎科学討論会第50回記念大会 東京都墨田区 国際ファッションセンター 2012年 口頭発表（一般）
- Cu2ZnSnS4ナノ結晶の液相 合成 [通常講演]末廣 智; 湯浅雅賀; 木田徹也; 島ノ江憲剛セラミックス基礎科学討論会第50回記念大会 東京都墨田区 国際ファッションセンター 2012年 口頭発表（一般）
- SnO2ナノ粒子ガスセンサ における水素応答メカニズム の検討 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 山添 ?第53回化学センサ研究発表会 浜松市 アクトシティ浜松 2012年 口頭発表（一般）
- 水熱処理法によるパラジウ ム担持酸化スズクラスターの 調製とそのガス検知特性 [通常講演]進 由佳; 末松昂一; 湯浅雅賀; 木田徹也; 島ノ江憲剛第53回化学センサ研究発表会 浜松市 アクトシティ浜松 2012年 口頭発表（一般）
- LaNiO3微粒子を酸素発生 担体とした金属空気二次電 池空気極の作製 [通常講演]今村大志; 湯浅雅賀; 木; 田徹也; 島ノ江憲剛電気化学会第79回大会 浜松市 アクトシティ浜松 2012年 口頭発表（一般）
- Cu2ZnSnS4ナノ結晶を用い た薄膜作製とその特性評価 [通常講演]末廣 智; 湯浅雅賀; 田中 徹; 木田徹也; 島ノ江憲剛電気化学会第79回大会 浜松市 アクトシティ浜松 2012年 口頭発表（一般）
- Material design for high- sensitive semiconducting gas sensors - preparation of Pd-loaded SnO2 cluster sols [通常講演]Kengo Shimanoe; Yuka; Shin; Koichi Suematsu; Masayoshi Yuasa; Tetsuya KidaThe 14th International Meeting on Chemical Sensors, Nuremberg (Germany), N?rnberg Messe 2012年 口頭発表（一般）
- Propofol analysis using a TiO2 nanotube-based gas sensor and a solid electrolyte CO2 sensor [通常講演]Tetsuya Kida; Minhyun Seo; Shotarou Kishi; Masayoshi Yuasa; Yuichi Kanmura; Noboru; Yamazoe; Kengo ShimanoeThe 14th International Meeting on Chemical Sensors, Nuremberg (Germany), N?rnberg Messe 2012年 口頭発表（一般）
- ナノ結晶を用いた Cu2ZnSnS4薄膜の調製と太陽 電池特性 [通常講演]末廣 智; 湯浅雅賀; 田中 徹; 藤田克彦; 波多 聰; 木田徹也; 島ノ江憲剛第73回応用物理学会学術講演会 松山市 愛媛大学 2012年 口頭発表（一般）
- Pd loaded lamellar WO3 nanoparticles and their enhanced gas sensing performances to toluene and ethanol [通常講演]花 中秋; 湯浅雅賀; 木田徹也; 島ノ江憲剛日本セラミックス協会第25回秋季シンポジウム 名古屋市 名古屋大学 2012年 口頭発表（一般）
- 貴金属および金属酸化物 で表面修飾したSnO2ガスセ ンサの応答特性 [通常講演]児玉和也; 湯浅雅賀; 木田徹也; 島ノ江憲剛日本セラミックス協会第25回秋季シンポジウム 名古屋市 名古屋大学 2012年 口頭発表（一般）
- Comaparative study of undoped SnO2 materials: morphological aspects of hydrogen sensing in humid air [通常講演]Roman Pavelko; 湯浅雅; 賀; 木田徹也; 島ノ江憲剛日本セラミックス協会第25回秋季シンポジウム 名古屋市 名古屋大学 2012年 口頭発表（一般）
- Surface modification of SnO2 particles by Fe ions [通常講演]崔 中起; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛日本セラミックス協会第25回秋季シンポジウム 名古屋市 名古屋大学 2012年 口頭発表（一般）
- SnO2半導体ガスセンサの 応答に及ぼす酸素及び水蒸 気吸着の効果 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛日本セラミックス協会第25回秋季シンポジウム 名古屋市 名古屋大学 2012年 口頭発表（一般）
- SnO2半導体表面への酸素 および水蒸気の吸着とその 電気特性への影響 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛第110回触媒討論会 福岡市 九州大学 2012年 口頭発表（一般）
- 2室法食塩電解用酸素還元 電極のためのカーボン担持 ペロブスカイト型酸化物触媒 の設計 [通常講演]山内辰大; 湯浅雅賀; 木田徹也; 島ノ江憲剛第110回触媒討論会 福岡市 九州大学 2012年 口頭発表（一般）
- 高比表面積LaNiO3触媒の 調製と金属空気二次電池用 空気極の作製 [通常講演]今村大志; 湯浅雅賀; 木田徹也; 島ノ江憲剛第110回触媒討論会 福岡市 九州大学 2012年 口頭発表（一般）
- The effect of the Surface Area of LaNiO3 Support on the Oxygen Reduction/ Evolution Activity of Air Electrode for Rechargeable Metal-Air Batteries [通常講演]Masayoshi Yuasa; Hiroshi Imamura; Tetsuya Kida; Kengo ShimanoeThe Pacific Rim Meeting on Electrochemical and Solid-State Science 2012, Honolulu(USA),Hilton Hawaiian Village 2012年 口頭発表（一般）
- 酸素還元用カーボ担持 LaMnO3触媒への白金添加効果 [通常講演]望月?平; 立花直樹; 湯浅雅賀; 木田徹也; 岩本 淳; 島ノ江憲剛2012年日本化学会西日本大会 佐賀市 佐賀大学 2012年 口頭発表（一般）
- 接触燃焼式ガスセンサに 用いる触媒材料の検討 [通常講演]島田元気; 湯浅雅賀; 木田徹也; 島ノ江憲剛2012年日本化学会西日本大会 佐賀市 佐賀大学 2012年 口頭発表（一般）
- 界面活性剤修飾ケイタング ステン酸ハイブリッド触媒を 用いた酸水溶液からの貴金属 光回収 [通常講演]古相博正; 湯浅雅賀; 木田徹也; 島ノ江憲剛2012年日本化学会西日本大会 佐賀市 佐賀大学 2012年 口頭発表（一般）
- La-Mnペロブスカイ型酸化 物-白金複合触媒の酸素還元 特性 [通常講演]望月?平; 立花直樹; 湯浅雅賀; 木田徹也; 岩本 淳; 島ノ江憲剛第53回電池討論会 福岡市 ヒルトン福岡シーホーク 2012年 口頭発表（一般）
- 混合導電体を用いた酸素 分離膜における表面反応の 検討 [通常講演]堀 雄輔; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛平成24年度日本セラミックス協会九州支部秋季合同研究発表会 北九州市 ウェルとばた 2012年 口頭発表（一般）
- 酸化物半導体電極を接合 したBiCuVOxセンサのガス 検知特性 [通常講演]山崎和哉; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛平成24年度日本セラミックス協会九州支部秋季合同研究発表会 北九州市 ウェルとばた 2012年 口頭発表（一般）
- 今村大志; 湯浅雅賀; 木田徹也; 島ノ江憲剛第48回化学関連支部合同九州大会 2011年07月 ポスター発表
- カーボン担持ペロブスカイト型酸化物を用いた二室法食塩電解槽用酸素陰極の検討 [通常講演]山内辰大; 湯浅雅賀; 木田徹也; 島ノ江憲剛第48回化学関連支部合同九州大会 2011年07月 ポスター発表
- NASICON/複合酸化物界面の 有機ガス検知特性 [通常講演]森永直樹; 湯浅雅賀; 木田徹也; 島ノ江憲剛第49回セラミックス基礎科学討論会 岡山市 岡山コンベンションセンター 2011年 口頭発表（一般）
- WO3ガスセンサにおける ガス吸着特性とセンサ特性 の評価 [通常講演]隈本竜一; 湯浅雅賀; 木田徹也; 島ノ江憲剛第49回セラミックス基礎科学討論会 岡山市 岡山コンベンションセンター 2011年 口頭発表（一般）
- Keggin型および欠損型ポリ 酸−界面活性剤ハイブリッド 光触媒を用いた水/有機二相 界面からのAuの回収 [通常講演]松藤浩正; 湯浅雅賀; 木田徹也; 島ノ江憲剛電気化学会第78回大会 横浜市 横浜国立大学 2011年 口頭発表（一般）
- 固体電解質NASICONに複合 酸化物電極を接合した有機 ガスセンサの検討 [通常講演]森永直樹; 湯浅雅賀; 木田徹也; 島ノ江憲剛第51回化学センサ研究発表会 横浜市 横浜国立大学 2011年 口頭発表（一般）
- SnO2半導体の電気的特性 に及ぼす水蒸気の効果 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛第51回化学センサ研究発表会 横浜市 横浜国立大学 2011年 口頭発表（一般）
- アルカリ水溶液系金属空気 電池用正極の高性能化 [依頼講演] [通常講演]湯浅雅賀トークシャワー・イン・九州2011 長崎市 ながさき式見ハイツ 2011年
- 高温水蒸気処理によるSnO2 表面構造変化についての考察 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛日本セラミックス協会第24回秋季シンポジウム 札幌市 北海道大学 2011年 口頭発表（一般）
- 複合酸化物電極を接合した NASICON固体電解質センサの 有機ガス応答特性 [通常講演]森永直樹; 湯浅雅賀; 木田徹也; 島ノ江憲剛日本セラミックス協会第24回秋季シンポジウム 札幌市 北海道大学 2011年 口頭発表（一般）
- SnO2半導体表面への酸素吸 着特性における水蒸気吸着 の影響 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛第52回化学センサ研究発表会 新潟市 朱鷺メッセ 2011年 口頭発表（一般）
- 熱安定性に優れた酸化スズ ナノ粒子の合成とガス検知 特性 [通常講演]湯浅雅賀; 山田清美; 渡邉 賢; 木田徹也; 山添 ?; 島ノ江憲剛第52回化学センサ研究発表会 新潟市 朱鷺メッセ 2011年 口頭発表（一般）
- 欠損型ポリ酸 / 界面活性剤 ハイブリッド光触媒を用いた 貴金属の光回収における諸因 子の効果 [通常講演]松藤浩正; 湯浅雅賀; 木田徹也; 島ノ江憲剛2011年電気化学会秋季大会 新潟市 朱鷺メッセ 2011年 口頭発表（一般）
- Development of High- sensitive Gas Sensor based on Theoretical Material Design [通常講演]Kengo Shimanoe; Masayoshi Yuasa; Tetsuya Kida; Noboru YamazoeInternational Conference on Advanced Electromaterials 2011, Jeju (Korea), Ramada Plaza Jeju Hotel 2011年 口頭発表（一般）
- Bi-functional Oxygen Electrode using Perovskite -type Oxides for Rechargeable Metal-air Batteries [通常講演]Masayoshi Yuasa; Masatoshi Nishida, Tetsuya; Kida; Noboru Yamzoe; Kengo; ShimanoeInternational Conference on Advanced Electromaterials 2011, Jeju (Korea), Ramada Plaza Jeju Hotel 2011年 口頭発表（一般）
- パラジウム担持酸化スズ クラスターの調製とその ガスセンサ特性 [通常講演]進 由佳; 湯浅雅賀; 木田徹也; 島ノ江憲剛2011年日本化学会西日本大会 徳島市 徳島大学 2011年 口頭発表（一般）
- 高比表面積LaNiO3を担体と した金属空気二次電池空気 極の検討 [通常講演]今村大志; 湯浅雅賀; 木田徹也; 島ノ江憲剛2011年日本化学会西日本大会 徳島市 徳島大学 2011年 口頭発表（一般）
- 2室法食塩電解槽に用いる ペロブスカイト型酸化物酸素 陰極の研究 [通常講演]山内辰大; 湯浅雅賀; 木田徹也; 島ノ江憲剛2011年日本化学会西日本大会 徳島市 徳島大学 2011年 口頭発表（一般）
- Gas sensing properties of tin dioxide nano- particles prepared in a polar organic solvent [通常講演]Masayoshi Yuasa; Kiyomi Yamada; Ken Watanabe; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe9th Asian Conference on Chemical Sensors, Taipei, Chientan Youth Activity Center 2011年 口頭発表（一般）
- Study on the sensing mechanism of semiconductor gas sensors under water vapor condition [通常講演]Koichi Suematsu; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe9th Asian Conference on Chemical Sensors, Taipei, Chientan Youth Activity Center 2011年 口頭発表（一般）
- Bi-Functional Air Electode Using Conductive Oxides for Metal-Air Secondary Batteries [招待講演] [通常講演]Masayoshi Yuasa; Masatoshi Nishida, Tetsuya; Kida; Noboru; Yamazoe, Kengo; ShimanoeThe 8th International Symposium on Novel Carbon Resource Sciences, Nagpur (India) CSIR-NEERI 2011年 口頭発表（一般）
- リチウム－空気電池に用いる空気極の基礎特性評価 [通常講演]松好 翼; 湯浅雅賀; 木田徹也; 島ノ江憲剛第47回化学関連支部合同九州大会 2010年07月 ポスター発表
- ポリ酸･界面活性剤ハイブリッド触媒を用いた金の光回収 [通常講演]松藤浩正; 湯浅雅賀; 木田徹也; 島ノ江憲剛第47回化学関連支部合同九州大会 2010年07月 ポスター発表
- Ba1-xLaxFeO3-δ酸素分離膜 の律速段階の検討 [通常講演]二宮 昴; 渡邉 賢; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛第48回セラミックス基礎科学討論会 2010年 口頭発表（一般）
- SnO2ガスセンサにおける酸素 分圧依存症の基礎的理解 [通常講演]山田清美; 末松昂一; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛第48回セラミックス基礎科学討論会 2010年 口頭発表（一般）
- 炭酸塩を補助相とするMetal -Insulator-SiC構造CO2センサ の検討 [通常講演]井上浩文; Mike Andersson; 湯浅雅賀; 木田徹也; Anita Lloyd; Spetz; 島ノ江憲剛第49回化学センサ研究発表会 富山市 富山大学 2010年 口頭発表（一般）
- BaTiO3系サーミスタを用いた 水素センサの高感度化 [通常講演]立花直樹; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛第49回化学センサ研究発表会 富山市 富山大学 2010年 口頭発表（一般）
- SnO2半導体上へのO2吸着と その電気特性 [通常講演]末松昂一; 山田清美; Michael H_bner; 湯浅雅賀; 木田徹也; Nicolae Barsan; Udo; Weimar; 山添; 島ノ江憲剛第49回化学センサ研究発表会 富山市 富山大学 2010年 口頭発表（一般）
- 半導体ガスセンサにおける 粒子径効果と利用効率の相関 [通常講演]島ノ江憲剛; 藤山修平; 湯浅雅賀; 木田徹也第50回化学センサ研究発表会 厚木市 神奈川工科大学 2010年 口頭発表（一般）
- Au担持TiO2ナノチューブ センサのVOCガスに対する 応答特性 [通常講演]徐 敏鉉; 湯浅雅賀; 木田徹也; 上村裕一; 山添; 島ノ江憲剛第50回化学センサ研究発表会 厚木市 神奈川工科大学 2010年 口頭発表（一般）
- WO3 半導体微粒子への酸素 ガス吸着とセンサ特性 [通常講演]隈本竜一; 西山 綾; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛2010年日本化学会西日本大会 熊本市 熊本大学 2010年 口頭発表（一般）
- 固体電解質ガスセンサに用 いる複合酸化物電極材料の 検討 [通常講演]森永直樹; 湯浅雅賀; 木田徹也; 島ノ江憲剛2010年日本化学会西日本大会 熊本市 熊本大学 2010年 口頭発表（一般）
- ポリ酸―界面活性剤ハイブ リッド触媒を用いた酸系水溶 液からの金の光回収 [通常講演]松藤浩正; 湯浅雅賀; 木田徹也; 島ノ江憲剛2010年日本化学会西日本大会 熊本市 熊本大学 2010年 口頭発表（一般）
- リチウム‐空気電池に用い る空気極の構造の検討 [通常講演]松好 翼; 湯浅雅賀; 木田徹也; 島ノ江憲剛2010年日本化学会西日本大会 熊本市 熊本大学 2010年 口頭発表（一般）
- MEMS-type Gas Sensor based on TiO2 Nanotube for VOCs Detection [通常講演]Masayoshi Yuasa; Minhyun Seo; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe3rd International Congress on Ceramics, 大阪市 大阪国際会議場 2010年 口頭発表（一般）
- Toward the understanding of relationship between grain size effect and utility factor for semiconductor gas sensors [通常講演]Kengo Shimanoe; Shuhei Fujiyama; Masayoshi Yuasa; Tetsuya Kida3rd International Congress on Ceramics, 大阪市 大阪国際会議場 2010年 口頭発表（一般）
- H2 gas sensors using PTC thermistors based on Bi, Na-codeoped BaTiO3 [通常講演]Naoki Tachibana; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe8th Asian Conference on Chemical Sensors 2009年11月 ポスター発表
- Microstructure control of TiO2 nanotube based film by ball-milling treatment for VOC gas detection [通常講演]Min-Hyun.Seo; Masayoshi Yuasa; Tetsuya Kida; J.S.Huh; Noboru Yamazoe; Kengo Shimanoe8th Asian Conference on Chemical Sensors 2009年11月 ポスター発表
- Masatoshi Nishida; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe11th Cross Straits Symposium on Materials,Energy and Environmental Sciences 2009年11月 ポスター発表
- Planar-Type Organic Gas Sensor using BiCuBOx Solid Electrolyte Fitted with a Combustion Catalyst Layer [通常講演]Hiroaki Harano; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe11th Cross Straits Symposium on Materials,Energy and Environmental Sciences 2009年11月 ポスター発表
- Effects of the Grain Size and the Utility Factor on the Gas Sensing Properties of SnO2 Gas Sensor [通常講演]Shuhei Fujiyama; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe11th Cross Straits Symposium on Materials,Energy and Environmental Sciences 2009年11月 ポスター発表
- 有機・無機ハイブリッド 光触媒を用いた金の回収 [通常講演]松藤 浩正; 湯浅雅賀; 木田徹也; 島ノ江憲剛日本化学会西日本大会2009 2009年11月 ポスター発表
- 非水溶媒系リチウム空気電池に用いるカーボン電極の検討 [通常講演]松好 翼; 湯浅雅賀; 木田徹也; 島ノ江憲剛日本化学会西日本大会2009 2009年11月 ポスター発表
- Ba1-xLaxFeO3-δ酸素分 離膜の酸素透過律速段階 の検討 [通常講演]二宮 昴; 湯浅雅賀; 木田徹也; 山添 曻; 島ノ江憲剛第16回九州夏期セラミックス研究会 2009年08月 ポスター発表
- Ba-Fe系ペロブスカイト型 酸化物を用いた酸素分離膜 における表面改質の効果 [通常講演]渡邉 賢; 二宮 昴; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛電気化学会第76回大会 京都市 京都大学 2009年 口頭発表（一般）
- La-Ni系ペロブスカイト型 酸化物を担体とした金属空気 二次電池空気極の検討 [通常講演]西田正利; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛電気化学会第76回大会 京都市 京都大学 2009年 口頭発表（一般）
- Pt担持導電性酸化物のPEFC カソード電極への適用検討− （1）Pt担持SnO-SnO2電極の 物性評価 [通常講演]山本伸司; 湯浅雅賀; 木田徹也; 島ノ江憲剛電気化学会第76回大会 京都市 京都大学 2009年 口頭発表（一般）
- Pt担持導電性酸化物のPEFCカ ソード電極への適用検討− （2）電気化学的特性評価 [通常講演]山本伸司; 小野正樹; 湯; 浅雅賀; 木田徹也; 島ノ江憲剛電気化学会第76回大会 京都市 京都大学 2009年 口頭発表（一般）
- SnO2ガスセンサにおける結 晶子径及びドナー密度の影響 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛第47回化学センサ研究発表会 京都市 京都大学 2009年 口頭発表（一般）
- TiO2ナノチューブを用いた 有機ガス検知の検討 [通常講演]徐 敏鉉; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛第47回化学センサ研究発表会 京都市 京都大学 2009年 口頭発表（一般）
- FET型NO2センサにおける NaNO2系検知補助相への 貴金属添加量の影響 [通常講演]井上浩文; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛第47回化学センサ研究発表会 京都市 京都大学 2009年 口頭発表（一般）
- Key Factors in Oxide Semiconductor Gas Sensor for High-performance [通常講演]Kengo Shimanoe; Noboru Yamazoe; Masayoshi Yuasa; Tetsuya KidaInternational Symposium on Core Technology in Ceramics 2009, Pohang (Korea) , Pohang University of Science and Technology 2009年 口頭発表（一般）
- EDTAキレートを用いた逆均 一沈殿法による複合酸化物 の合成 [通常講演]邵 林; 湯浅雅賀; 木田徹也; 山添 ?; 島ノ江憲剛2009年電気化学秋季大会 小金井市 東京農工大学 2009年 口頭発表（一般）
- Ba0.95La0.05FeO3-δ酸素分離膜 における表面改質効果の検討 [通常講演]二宮 昴; 渡邉 賢; 湯浅雅賀; 木田徹也; 山添 ?2009年電気化学秋季大会 小金井市 東京農工大学 2009年 口頭発表（一般）
- 半導体ガスセンサにおける 粒子サイズと感応膜利用効率 の関係 [通常講演]藤山修平; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛第48回化学センサ研究発表会 小金井市 東京農工大学 2009年 口頭発表（一般）
- 液／液界面を利用したパラ ジウム担持SnO2ナノ粒子の 調製とそのガス検知特性 [通常講演]木田徹也; 倉地弘幸; 湯浅雅賀; 島ノ江憲剛; 山添 ?日本セラミックス協会第22回秋季シンポジウム 松山市 愛媛大学 2009年 口頭発表（一般）
- BaTiO3系サーミスタを用い た水素センサの組成制御に よる高感度化 [通常講演]立花直樹; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛日本セラミックス協会第22回秋季シンポジウム 松山市 愛媛大学 2009年 口頭発表（一般）
- WO3系NO2センサにおける粒子 の凝集抑制効果 [通常講演]湯浅雅賀; 西山 綾; 木田徹也; 山添 ?; 島ノ江憲剛日本セラミックス協会第22回秋季シンポジウム 松山市 愛媛大学 2009年 口頭発表（一般）
- BiCuVOx固体電解質を用いた プレーナ型有機ガスセンサの 高感度化 [通常講演]原野宏章; 湯浅雅賀; 木田徹也; 山添; 島ノ江憲剛日本セラミックス協会第22回秋季シンポジウム 松山市 愛媛大学 2009年 口頭発表（一般）
- Microstructure Control of SnO2-based Gas Sensor Using Cluster Sols [通常講演]Kengo Shimanoe; Kohei; Yoshida; Masayoshi Yuasa; Noboru YamazoeInternational Conference on Sol-Gel Processes for Advanced Ceramics, Kappakkam (India), India Gandhi Centre for Atomic Research 2009年 口頭発表（一般）
- Stability and interfacial structure of a NASICON- based CO2 sensor fitted with a solid reference electrode [通常講演]Tetsuya Kida; Shotarou Kishi; Masayoshi Yuasa; Noboru Yamazoe; Kengo Shimanoe8th Asian Conference on Chemical Sensors, Daegu (Korea), EXCO 2009年 口頭発表（一般）
- Toward basic understanding of transducer function on semiconductor gas sensors [通常講演]Kengo Shimanoe; Koichi Suematsu; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe8th Asian Conference on Chemical Sensors, Daegu (Korea), EXCO 2009年 口頭発表（一般）
- Preparation of a stable sol of Pd-loaded SnO2 by UV-assisted photochemical deposition [通常講演]Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo Shimanoe8th Asian Conference on Chemical Sensors, Daegu (Korea), EXCO 2009年 口頭発表（一般）
- Preparation of Nano-Sized Ternary Perovskite Oxide Particles by Modified Reverse Homogeneous Precipitation Method Using Metal-Edta Complex [通常講演]Lin Shao; Masayoshi; Yuasa; Tetsuya Kida; Noboru; Yamazoe; Kengo Shimanoe11th Cross Straits Symposium on Materials,Energy and Environmental Sciences, Pusan (Korea), Pusan National University 2009年 口頭発表（一般）
- Organic Gas Sensing Performance of TiO2 Nanotube-Based Porous Films [通常講演]Minhyun Seo; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeThe 26th International Japan-Korea Seminar on Ceramics, つくば市 エポカルつくば 2009年 口頭発表（一般）
- Combustion-type Hydrogen Gas SensorUsing PTC thermistor of Na，Bi doped- BaTiO3 [通常講演]Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe; Kengo ShimanoeThe 26th International Japan-Korea Seminar on Ceramics, つくば市 エポカルつくば 2009年 口頭発表（一般）
- Material design based on wet process for highly sensitive semiconductor gas sensors [通常講演]Kengo Shiamnoe; Masayoshi Yuasa; Tetsuya Kida; Noboru YamazoeGas sensors based on semiconducting metal oxides ?new directions, T?bingen (Germany), Hotel Stadt T?bingen 2009年 口頭発表（一般）
- WO3ガスセンサのNO2応答特性の解析 [通常講演]平田啓将; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 曻2008年日本化学会西日本大会 2008年11月 ポスター発表
- Ba‐Fe 系ぺロブスカイト型酸化物を用いた酸素分離膜の膜厚の検討 [通常講演]二宮 昴; 渡辺 賢; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 曻2008年日本化学会西日本大会 2008年11月 ポスター発表
- Stability of NASICON- based CO2 sensor attached with BiCuVOx and perovskite-type oxide as solid reference electrode under humid conditions [通常講演]Shotaro Kishi; Masayoshi Yuasa; Tetsuya Kida; V. Lantto; Kengo Shimanoe; Noboru Yamazoe10th Cross Straits Symposium on Materials, Energy and Environmental Sciences 2008年11月 ポスター発表
- Oxygen permeation properties of asymmetric-structured membranes based on Ba0.95La0.05FeO3-d perovskite oxide [通常講演]Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru Yamazoe10th Cross Straits Symposium on Materials, Energy and Environmental Sciences 2008年11月 ポスター発表
- FET-based NO2 sensors using noble metal-loaded NaNO2-WO3 auxiliary layer [通常講演]Hirofumi Inoue; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe10th Cross Straits Symposium on Materials, Energy and Environmental Sciences 2008年11月 ポスター発表
- Effect of Fe3+ doping on the gas sensing properties of SnO2 based gas sensors [通常講演]Koichi Suematsu; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe10th Cross Straits Symposium on Materials, Energy and Environmental Sciences 2008年11月 ポスター発表
- PTCサーミスタを用いた水素センサのPtコートによる高感度化 [通常講演]立花直樹; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 曻第45回化学関連支部合同九州大会 2008年07月 ポスター発表
- 西田正利; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 寺岡靖剛; 山添 曻第45回化学関連支部合同九州大会 2008年07月 ポスター発表
- Gas sensing characteristics and porosity control of nanoparticulate TiO2 films [通常講演]Min-Hyun.Seo; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe12th International Meetihg on Chemical Sensors 2008年07月 ポスター発表
- TiO2ガスセンサの微細構造 制御とガス検知特性 [通常講演]徐 敏鉉; 湯浅雅賀; 許増秀; 木田徹也; 島ノ江憲剛; 山添 ?第45回化学センサ研究発表会 甲府市 山梨大学 2008年 口頭発表（一般）
- BiCuVOx固体電解質ガス センサの電極構造の検討 [通常講演]南 卓也; 湯浅雅賀; 木田徹也; 上村裕一; 島ノ江憲剛; 山添 ?第45回化学センサ研究発表会 甲府市 山梨大学 2008年 口頭発表（一般）
- Ba-Fe系ペロブスカイト型 酸化物を用いた積層構造型 酸素分離膜の検討 [通常講演]渡邉 賢; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 寺岡靖剛; 山添 ?電気化学会第75回大会 甲府市 山梨大学 2008年 口頭発表（一般）
- Wet Process Preparation of Smaller Lamellar WO3 for Wide Range NO2 Detection [通常講演]Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe; Aya Nishiyama12th International Meeting on Chemical Sensors, Columbus (USA), Ohio State University 2008年 口頭発表（一般）
- Planar-type BiCuVOx Solid Electrolyte Sensor for Detection of Volatile Organic Compounds [通常講演]Tetsuya Kida; Takuya; Minami; Kengo Shimanoe; Noboru; Yamazoe12th International Meeting on Chemical Sensors, Columbus (USA), Ohio State University 2008年 口頭発表（一般）
- ラメラ状WO3を用いたNO2 センサの微細構造とガス応答 特性 [通常講演]西山 綾; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?第46回化学センサ研究発表会 宜野湾市 沖縄コンベンションセンター 2008年 口頭発表（一般）
- SnO2ナノ粒子へのFe3+ドー ピングとセンサ特性 [通常講演]末松昂一; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?第46回化学センサ研究発表会 宜野湾市 沖縄コンベンションセンター 2008年 口頭発表（一般）
- NASICON 固体電解質CO2 セ ンサにおける高湿潤雰囲気下 での安定性と固体参照電極/ NASICON 界面の構造解析 [通常講演]岸 章太郎; 湯浅雅賀; 木田徹也; V.Lantto; 島ノ江憲剛; 山添 ?日本セラミックス協会第21回秋季シンポジウム 北九州市 北九州国際会議場 2008年 口頭発表（一般）
- NaNO2-WO3系検知補助相を用 いたFET型NO2センサにおける 貴金属添加効果 [通常講演]井上浩文; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?日本セラミックス協会第21回秋季シンポジウム 北九州市 北九州国際会議場 2008年 口頭発表（一般）
- パラジウム担持SnO2ナノ粒子 の調製とそのガス検知特性 [通常講演]倉地弘幸; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?日本セラミックス協会第21回秋季シンポジウム 北九州市 北九州国際会議場 2008年 口頭発表（一般）
- High oxygen permeation through mixed conducting Ba0.95La0.05FeO3-δ-based asymmetric membranes [通常講演]Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoePacific Rim Meeting on Electrochemical and Solid-state Science 2008, Honolulu (USA), Hilton Hawaiian Village 2008年 口頭発表（一般）
- Ba-Fe 系ペロブスカイト型 酸化物混合導電体の酸素透過 特性 [通常講演]山?敦議; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 寺岡靖剛; 山添 ?2008年日本化学会西日本大会 長崎市 長崎大学 2008年 口頭発表（一般）
- Microstructural control of the sensing layer using WO3 lamellas prepared by an acidification method for NO2 sensor [通常講演]Aya Nishiyama; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe7th East Asian Conference on Chemical Sensors 2007年12月 ポスター発表
- Exploration of new sensing electrode materials for FET-type NOx sensors [通常講演]Hirofumi Inoue; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe7th East Asian Conference on Chemical Sensors 2007年12月 ポスター発表
- Pt触媒をコートしたPTC サーミスタによる高感度水素検知 [通常講演]立花直樹; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 曻2007年日本化学会西日本大会 2007年11月 ポスター発表
- 西田正利; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 寺岡靖剛; 山添 曻2007年日本化学会西日本大会 2007年11月 ポスター発表
- Investigation on the rate-determining step of oxygen permeation in La0.6Ca0.4CoO3 membrane [通常講演]Ken Watanabe; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru Yamazoe9th Cross Straits Symposium on Materials, Energy and Environmental Engineering 2007年11月 ポスター発表
- Preparation of nano-sized LaMn1-yFeyO3 for oxygen reduction electrode using modified reverse homogeneous precipitation method [通常講演]Lin Shao; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Yasutake Teraoka; Noboru Yamazoe9th Cross Straits Symposium on Materials, Energy and Environmental Engineering 2007年11月 ポスター発表
- Investigation on loading methods for PdO-SnO2 nanoparticle gas sensor [通常講演]Hiroyuki Kurachi; Takanori Masaki; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe9th Cross Straits Symposium on Materials, Energy and Environmental Engineering 2007年11月 ポスター発表
- Preparation of carbon-supported La1-xAxMn1-yFeyO3 (A=Ca, Sr) nano catalyst using reverse micelle method for oxygen reduction electrode [通常講演]Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeThe 8th International Symposium on Eco-materials Processing and Design 2007年01月 ポスター発表
- High oxygen permeable membrane by dense/porous asymmetric structure based on La0.6Ca0.4CoO3 perovskite-type oxide [通常講演]Ken Watanabe; Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeThe 8th International Symposium on Eco-materials Processing and Design 2007年01月 ポスター発表
- Sensing properties of NASICON-based CO2 sensor under saturated humid condition [通常講演]Shotaro Kishi; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeThe 8th International Symposium on Eco-materials Processing and Design 2007年01月 ポスター発表
- Carbon-supported nano- sized LaMnyFe1-yO3 prepared by modified reverse homogeneous precipitation method for oxygen reduction electrode [通常講演]Lin Shao; Masayoshi; Yuasa; Tetsuya Kida; Kengo; Shimanoe; Yasutake Teraoka; Noboru Yamazoe5th China International Conference on High-Performance Ceramics, Changsha (China), Vaya Hotel 2007年 口頭発表（一般）
- FET型NOxセンサの検知電極 の検討 [通常講演]井上浩文; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?第43回化学センサ研究発表会 野田市 東京理科大学 2007年 口頭発表（一般）
- BiCuVOx固体電解質を用いた VOCsセンサの検討 [通常講演]南 卓也; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?第43回化学センサ研究発表会 野田市 東京理科大学 2007年 口頭発表（一般）
- 固体電解質CO2ガスセンサ における固体参照極/NASICON 固体電解質界面の構造解析 [通常講演]岸章太郎; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?第43回化学センサ研究発表会 野田市 東京理科大学 2007年 口頭発表（一般）
- La0.6Ca0.4CoO3を用いた酸素 分離における律速過程の検討 [通常講演]渡邉 賢; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 寺岡靖剛; 山添 ?電気化学会第74回大会 野田市 東京理科大学 2007年 口頭発表（一般）
- Preparation of oxygen evolution layer/La0.6Ca0.4CoO3 densemembrane/porous support asymmetric structure for high- performance oxygen permeation [通常講演]K. Watanabe; M. Yuasa; T. Kida; K. Shimanoe; Y. Teraoka; N. Yamazoe16th International Conference on Solid State Ionics, Shanghai (China), Shanghai World Convention Hotel 2007年 口頭発表（一般）
- 逆ミセル法によるSnO2ナノ 粒子上へのシングルナノサイ ズPdO担持の検討 [通常講演]湯浅雅賀; 眞崎貴則; 木田徹也; 島ノ江憲剛; 山添 ?日本セラミックス協会第20回周期シンポジウム 名古屋市 名古屋工業大学 2007年 口頭発表（一般）
- BiCuVOx固体電解質を用いた プレーナ型有機ガスセンサ [通常講演]南 卓也; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?日本セラミックス協会第20回周期シンポジウム 名古屋市 名古屋工業大学 2007年 口頭発表（一般）
- ラメラ状WO3の微細構造制御 によるNO2センサの高性能化 [通常講演]西山 綾; 湯浅雅賀; 木田徹也; 島ノ江憲剛; 山添 ?日本セラミックス協会第20回周期シンポジウム 名古屋市 名古屋工業大学 2007年 口頭発表（一般）
- ガス拡散型電極反応層の 構造設計 [通常講演]湯浅雅賀; 古賀晃子; 木田徹也; 島ノ江憲剛; 寺岡靖剛; 山添 ?2007年電気化学会秋季大会 東京都目黒区 東京工業大学 2007年 口頭発表（一般）
- 逆ミセル法によりPdOを微細 担持したSnO2半導体ガスセン サのガス検知特性 [通常講演]湯浅雅賀; 眞崎貴則; 木田徹也; 島ノ江憲剛; 山添 ?第44回化学センサ研究発表会 東京都目黒区 東京工業大学 2007年 口頭発表（一般）
- Fabrication and sensing properties of TiO2 nanotube based gas sensors [通常講演]Minhyun Seo; Sangjin Oh; Masayoshi Yuasa; Tetsuya; Kida, Kengo Shimanoe; Hyunggi; Byun, Jeungsoo Huh7th East Asian Conference on Chemical Sensors, Singapore, Hotel Novotel Clarke Quay Singapore 2007年 口頭発表（一般）
- Preparation of nano-sized PdO loaded on SnO2 nano- particles by reverse micelle method [通常講演]Masayoshi Yuasa; Takanori Masaki; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe7th East Asian Conference on Chemical Sensors, Singapore, Hotel Novotel Clarke Quay Singapore 2007年 口頭発表（一般）
- Investigation of the stability under high humid conditions for NASICON- based CO2 sensor fitted with BiCuVOx/Perovskite reference electrode [通常講演]Shotarou Kishi; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe7th East Asian Conference on Chemical Sensors, Singapore, Hotel Novotel Clarke Quay Singapore 2007年 口頭発表（一般）
- Effect of B-site substitutions on oxygen permeable membrane of Ba-Fe based perovskite-type oxide [通常講演]Daisuke Takauchi; Ken Watanabe; Ken Namidome; Masayoshi Yuasa; Kengo Shimanoe8th Cross Straits Symposium on Materials, Energy and Environmental Sciences 2006年11月 ポスター発表
- Material design of perovskite-type oxide electrode for BiCuVOx oxygen sensor operative atlow temperature [通常講演]Takuya Minami; Shotaro Kishi; Masayoshi Yuasa; Kengo Shimanoe; Noboru Yamazoe8th Cross Straits Symposium on Materials, Energy and Environmental Sciences 2006年11月 ポスター発表
- 高感度ガスセンサのためのSnO2クラスターゾルの調製 [通常講演]本多孝徳; 吉田宏平; 湯浅雅賀; 島ノ江憲剛; 山添 曻2006年日本化学会西日本大会 2006年09月 ポスター発表
- ラメラ状WO3微粒子の湿式調製とガスセンサ特性 [通常講演]西山 綾; 的場吉幸; 湯浅雅賀; 島ノ江憲剛; 山添 曻2006年日本化学会西日本大会 2006年09月 ポスター発表
- Wet process-preparation of Re-doped WO3 for wide range of NO2 detection [通常講演]Yoshiyuki Matoba; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeThe 11th International Meeting on Chemical Sensors 2006年07月 ポスター発表
- NASICON-based CO2 sensor using a composite of perovskite type oxide and BiCuVOx as a solid reference electrode for high stability [通常講演]Shotaro Kishi; Masayoshi Yuasa; Kengo Shimanoe; Noboru YamazoeThe 11th International Meeting on Chemical Sensors 2006年07月 ポスター発表
- 高速ガス置換による半導体ガスセンサの応答回復特性の解析 [通常講演]黒岩 徹; 湯浅雅賀; 島ノ江憲剛; 山添 曻化学関連支部合同九州大会 2006年07月 ポスター発表
- 修飾逆均一沈殿法によるLaMn1-yFeyO3の調製とガス拡散型電極性能 [通常講演]邵 林; 湯浅雅賀; 島ノ江憲剛; 寺岡靖剛; 山添 曻化学関連支部合同九州大会 2006年07月 ポスター発表
- BiCuVOx固体電解質を用いた 酸素センサの電極材料の検討 [通常講演]南卓也; 岸章太郎; 湯浅雅賀; 島ノ江憲剛; 山添 曻化学関連支部合同九州大会 2006年07月 ポスター発表
- La-Co系ペロブスカイト型 酸化物を用いた積層構造型 酸素分離膜の検討 [通常講演]渡邉 賢; 湯浅雅賀; 島ノ江憲剛; 寺岡靖剛; 山添 ?電気化学会第73回大会 八王子市 首都大学東京 2006年 口頭発表（一般）
- SnO2クラスター分散水溶液 を用いた高感度薄膜型ガス センサの検討 [通常講演]吉田宏平; 湯浅雅賀; 島ノ江憲剛; 山添?電気化学会第73回大会 八王子市 首都大学東京 2006年 口頭発表（一般）
- High-sensitive gas sensor microstructure-controlled by SnO2 cluster prepared through hydrothermal treatment [通常講演]Kengo Shimanoe; Kohei; Yoshida; Masayoshi Yuasa; Noboru YamazoeE-MRS IUMRS ICEM 2006 Spring Meeting, Nice (France), Acropolis Congress Center 2006年 口頭発表（一般）
- 置換型BiVOx固体電解質を用 いた酸素センサの低温作動化 [通常講演]南 卓也; 岸 章太郎; 湯浅雅賀; 島ノ江憲剛; 山添 ?日本セラミックス協会第19回秋季シンポジウム 甲府市 山梨大学 2006年 口頭発表（一般）
- 修飾逆均一沈殿法により調製 したLaMn1-yFeyO3ナノ粒子担持 電極の作製と特性評価 [通常講演]邵 林; 湯浅雅賀; 島ノ江憲剛; 寺岡靖剛; 山添 ?2006年電気化学会秋季大会 京田辺市 同志社大学 2006年 口頭発表（一般）
- La-Co系ぺロブスカイト型 酸化物を用いた積層構造酸 素分離膜への酸素放出層形 成による高性能化 [通常講演]渡邉 賢; 湯浅雅賀; 島ノ江憲剛; 寺岡靖剛; 山添 ?2006年電気化学会秋季大会 京田辺市 同志社大学 2006年 口頭発表（一般）
- 逆ミセルによるSnO2ナノ 粒子上へのPd担持の検討 [通常講演]眞崎貴則; 湯浅雅賀; 島ノ江憲剛; 山添 ?第42回化学センサ研究発表会 京田辺市 同志社大学 2006年 口頭発表（一般）
- 高速ガス置換による半導体 ガスセンサの応答特性解析 [通常講演]黒岩 徹; 湯浅雅賀; 島ノ江憲剛; 山添 ?第42回化学センサ研究発表会 京田辺市 同志社大学 2006年 口頭発表（一般）
- BaTiO3系PTCサーミスターを 用いた可燃性ガスセンサの 検討 [通常講演]永野崇仁; 湯浅雅賀; 島ノ江憲剛; 山添 ?第42回化学センサ研究発表会 京田辺市 同志社大学 2006年 口頭発表（一般）
- 極性有機溶媒を用いたSnO2 ナノ粒子の調製 [通常講演]澤田千佳; 渡邉賢; 湯浅雅賀; 島ノ江憲剛; 寺岡靖剛; 山添?2006年日本化学会西日本大会, 沖縄県西原町, 琉球大学 2006年 口頭発表（一般）
- Stability of La-Mn-based perovskite-type nano-oxide for oxygen reduction electrode used in strong alkaline media [通常講演]Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeInternational Chemical Congress of Pacific Basin Societies 2005 2005年12月 ポスター発表
- Design of high-efficiency oxygen permeable membrane based on dense/ porous asymmetric structure of perovskite-type oxides [通常講演]Ken Watanabe; Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru YamazoeThe 7th Cross Straits Symposium on Materials, Energy, and Environmental Sciences 2005年12月 ポスター発表
- La1-xCaxMn1-yFeyO3担持カーボ ン電極の酸素還元における 安定性の評価 [通常講演]湯浅雅賀; 酒井剛; 島ノ江憲剛; 寺岡靖剛; 山添?電気化学会第72回大会 熊本市 熊本大学 2005年 口頭発表（一般）
- 酸化剤含有逆ミセルを用いた La-Mn系ペロブスカイト型酸 化物ナノ粒子の調製 [通常講演]湯浅雅賀; 島ノ江憲剛; 寺岡靖剛; 山添?第96回触媒討論会 熊本市 熊本大学 2005年 口頭発表（一般）
- ペロブスカイト型酸化物担 持カーボン電極のカソード 分極に対する安定性 [通常講演]湯浅雅賀; 酒井剛; 島ノ江憲剛; 寺岡靖剛; 山添?電気化学会第71回大会 横浜市 慶應義塾大学 2004年 口頭発表（一般）
- 逆ミセル法により調製した ペロブスカイト型酸化物 ナノ粒子担持電極のカソード 分極に対する安定性評価 [通常講演]湯浅雅賀; 島ノ江憲剛; 寺岡靖剛; 山添?第94回触媒討論会 仙台市 東北大学 2004年 口頭発表（一般）
- Stability of Carbon- Supported Perovskite-Type Oxide under Cathodic Polarization in Strong Alkaline Media [通常講演]Masayoshi Yuasa; Kengo Shimanoe; Yasutake Teraoka; Noboru Yamazoe206th Meeting of the Electrochemical Society, Honolulu (USA), Hilton Hawaiian Village 2004年 口頭発表（一般）
- Reverse Micelle Based Preparation of Partially Substituted Lanthanum Manganites Supported on Carbon for Air Cathode [通常講演]Masayoshi Yuasa; Go Sakai; Kengo Shimanoe; Noboru Yamazoe203th Meeting of the Electrochemical Society 2003年05月 ポスター発表
- 酸化剤内包逆ミセルにより 調製したぺロブスカイト型 酸化物担持カーボン電極 [通常講演]湯浅雅賀; 酒井剛; 島ノ江憲剛; 寺岡靖剛; 山添?2003年電気化学秋季大会 札幌市 北海道大学 2003年 口頭発表（一般）
- 逆ミセル法による酸素還元 電極用ペロブスカイト型 酸化物ナノ粒子の調製 [通常講演]湯浅雅賀; 酒井剛; 島ノ江憲剛; 寺岡靖剛; 山添?第92回触媒討論会 徳島市 徳島大学 2003年 口頭発表（一般）
- Oxygen Reduction Activity of Carbon- Supported La1xSrxMnO3 (x=0 and 0.2) for Gas Diffusion Type Oxygen Reduction Electrode by Reverse Micelle Method [通常講演]Masayoshi Yuasa; Shin Imaizumi; Go Sakai; Kengo Shimanoe; Noboru Yamazoe4th Cross Straits Symposium on Materials, Energy and Enviromental Sciences 2002年12月 ポスター発表
- Preparation of LaMnO3-dispersed oxygen reduction electrode by reverse micelle method - Dependence on surfactants [通常講演]M. Yuasa; S. Imaizumi; G. Sakai; K. Shimanoe; N. YamazoeAsian Conference on Electrochemistry 2002年05月 ポスター発表
- 逆ミセル法を用いたガス拡散 型酸素還元電極の調製-界面 活性剤の検討 [通常講演]湯浅雅賀; 今泉心; 酒井剛; 島ノ江憲剛; 山添?電気化学会第69回大会 仙台市 東北大学 2002年 口頭発表（一般）
- 逆ミセル法により調製した LaMnO3系酸化物担持カーボン 電極の酸素還元特性 [通常講演]湯浅雅賀; 今泉心; 酒井剛; 島ノ江憲剛; 山添?第43回電池討論会 福岡市 九州産業大学 2002年 口頭発表（一般）
- La-Mn系ペロブスカイト型 酸化物を用いた酸素還元 電極の濃NaOH電解液中に おける安定性 [通常講演]湯浅雅賀; 今泉心; 酒井剛; 島ノ江憲剛; 山添?第26回 電解技術討論会 京都市 京都大学 2002年 口頭発表（一般）
MISC
- 湯浅雅賀 徳山科学技術振興財団 H２５年度研究助成 研究報告書 34 -37 2014年12月
- MA Nan; SUEMATSU Koichi; YUASA Masayoshi Proceedings of the Chemical Sensor Symposium 57 4 -6 2014年09月
- Hua Zhongqiu; Yuasa Masayoshi; Kida Tetsuya Proceedings of the Chemical Sensor Symposium 57 7 -9 2014年09月
- 金属空気電池の二次電池化 に向けた導電性酸化物空気極 のナノ構造制御湯浅雅賀 岩谷直治記念財団 研究報告書 37 109 -111 2014年08月
- 末松 昂一; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 56 103 -105 2014年03月
- 安価かつ高出力な空気電池 を可能に湯浅雅賀 東アジア環境研究機構 NEWSLETTER 9 3 -3 2014年03月
- Tetsuya Kida; Hiromasa Matsufuji; Masayoshi Yuasa; Kengo Shimanoe MULTI-FUNCTIONAL MATERIALS AND STRUCTURES IV 747 518 -+ 2013年
- R. G. Pavelko; J. -K. Choi; A. Urakawa; M. Yuasa; T. Kida; K. Shimanoe; N. Yamazoe PHYSICAL CHEMISTRY OF INTERFACES AND NANOMATERIALS XII 8811 2013年
- シンポジウム・ワークショ ップ報告「第８回新炭素資源国際シンポジウム」寺岡靖剛; 湯浅雅賀; 諸賀加奈 Novel Carbon Resource Sciences Newsletter 7 39 -40 2012年07月
- 末松 昂一; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 53 (0) 115 -117 2012年03月
- 進 由佳; 末松 昂一; 湯浅 雅賀 Proceedings of the Chemical Sensor Symposium 53 (0) 118 -120 2012年03月
- 末廣智; 湯浅雅賀; 田中徹; 波多聰; 木田徹也; 島ノ江憲剛 電気化学会大会講演要旨集 79th 2012年
- 末廣智; 湯浅雅賀; 田中徹; 藤田克彦; 波多聰; 木田徹也; 島ノ江憲剛 応用物理学会学術講演会講演予稿集(CD-ROM) 73rd 2012年
- 末松 昴一; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 52 13 -15 2011年09月
- 湯浅 雅賀; 山田 清美; 渡邉 賢 Proceedings of the Chemical Sensor Symposium 52 16 -18 2011年09月
- 湯浅雅賀 日本板硝子材料工学助成会 成果報告書 29 33 -34 2011年08月
- 森永 直樹; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 51 103 -105 2011年03月
- 末松 昂一; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 51 148 -150 2011年03月
- Kengo Shimanoe; Masayoshi Yuasa; Tetsuya Kida; Noboru Yamazoe 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 38 -43 2011年
- 島ノ江 憲剛; 藤山 修平; 湯浅 雅賀 Proceedings of the Chemical Sensor Symposium 50 76 -78 2010年09月
- 徐 敏鉉; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 50 94 -96 2010年09月
- 井上 浩文; Andersson Mike; 湯浅 雅賀 Proceedings of the Chemical Sensor Symposium 49 46 -48 2010年03月
- 立花 直樹; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 49 58 -60 2010年03月
- 藤山 修平; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 48 85 -87 2009年09月
- 末松 昴一; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 47 34 -36 2009年03月
- 井上 浩文; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 47 58 -60 2009年03月
- 徐 敏鉉; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 1 (1) 192 -+ 2009年 [査読有り]
- 西山 綾; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 46 46 -48 2008年09月
- 末松 昴一; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 46 52 -54 2008年09月
- 徐 敏鉉; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 45 22 -24 2008年03月
- 南 卓也; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 45 31 -33 2008年03月
- Tetsuya Kida; Hiroyuki Kurachi; Masayoshi Yuasa; Kengo Shimanoe; Noboru Yamazoe MULTI-FUNCTIONAL MATERIALS AND STRUCTURES, PTS 1 AND 2 47-50 1506 -+ 2008年
- Kouichi Suematsu; Takanori Honda; Masayoshi Yuasa; Tetsuya Kida; Kengo Shimanoe; Noboru Yamazoe MULTI-FUNCTIONAL MATERIALS AND STRUCTURES, PTS 1 AND 2 47-50 1502 -+ 2008年
- Preparation of nano-sized LaMn1-yFeyO3 for oxygen reduction electrode using modified reverse homogeneous precipitation methodL. Shao; M. Yuasa; T. Kida; K. Shimanoe; Y. Teraoka; N. Yamazoe Proc. of the 9th Cross Straits Symposium on Materials, Energy and Environmental Engineering 101 -102 2007年11月
- Investigation on the rate-determining step of oxygen permeation in La0.6Ca0.4CoO3 membranesK. Watanabe; M. Yuasa; T. Kida; K. Shimanoe; Y. Teraoka; N. Yamazoe Proc. of the 9th Cross Straits Symposium on Materials, Energy and Environmental Engineering 88 -89 2007年11月
- 湯浅 雅賀; 眞崎 貴則; 木田 徹也 Proceedings of the Chemical Sensor Symposium 44 4 -6 2007年09月
- 井上 浩文; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 43 94 -96 2007年03月
- 南 卓也; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 43 130 -132 2007年03月
- 岸 章太郎; 湯浅 雅賀; 木田 徹也 Proceedings of the Chemical Sensor Symposium 43 136 -138 2007年03月
- T. Kida; S. Kishi; M. Yuasa; K. Shimanoe; N. Yamazoe TRANSDUCERS '07 & EUROSENSORS XXI, DIGEST OF TECHNICAL PAPERS, VOLS 1 AND 2 975 -978 2007年
- 眞崎 貴則; 湯浅 雅賀; 島ノ江 憲剛 Proceedings of the Chemical Sensor Symposium 42 145 -147 2006年09月
- 黒岩 徹; 湯浅 雅賀; 島ノ江 憲剛 Proceedings of the Chemical Sensor Symposium 42 148 -150 2006年09月
- 永野 崇仁; 湯浅 雅賀; 島ノ江 憲剛 Proceedings of the Chemical Sensor Symposium 42 151 -153 2006年09月
- 吉田 宏平; 湯浅 雅賀; 島ノ江 憲剛 Proceedings of the Chemical Sensor Symposium 41 4 -6 2006年04月
産業財産権
- 特開2015-018679:リチウム空気二次電池 2015年01月29日林 政彦, 蓑輪 浩伸, 林 克也, 小林 隆一, 島ノ江 憲剛, 木田 徹也, 湯浅 雅賀 日本電信電話株式会社, 国立大学法人九州大学 201503011642109604
- 特開2014-049304:空気電池用ガス拡散電極およびその作製方法ならびに空気電池 2014年03月17日松元 隆志, 新井 健太郎, 斉藤 憲明, 木野 貴允, 岩本 淳, 島ノ江 憲剛, 湯浅 雅賀 本田技研工業株式会社, 国立大学法人九州大学 201403077596288128
- 特許第4859129号:BiMeVOx系VOCsセンサ 2011年11月11日島ノ江 憲剛, 山添 昇, 木田 徹也, 湯浅 雅賀, 南 卓也 フィガロ技研株式会社 201303017991386120
- 特許第4794398号:SnO2ガスセンサの製造方法 2011年08月05日島ノ江 憲剛, 山添 昇, 湯浅 雅賀 フィガロ技研株式会社 201303098629713016
- 島ノ江 憲剛, 木田 徹也, 湯浅 雅賀 フィガロ技研株式会社 201003006935808485
- 特開2008-296162:酸素分離膜 2008年12月11日島ノ江 憲剛, 寺岡 靖剛, 山添 ▲昇, 木田 徹也, 湯浅 雅賀, 高内 大輔, 渡邉 賢 独立行政法人科学技術振興機構 200903046609208541
受賞
共同研究・競争的資金等の研究課題
- 日本学術振興会：科学研究費助成事業 基盤研究(C)研究期間 : 2020年04月 -2023年03月代表者 : 湯浅 雅賀
- 徳山科学技術振興財団：平成25年度 徳山科学技術振興財団研究助成研究期間 : 2013年04月 -2014年03月代表者 : 湯浅雅賀
- 金属空気電池の二次電池化に向けた導電性酸化物空気極のナノ構造制御岩谷直治記念財団：第38回岩谷科学技術研究助成研究期間 : 2012年04月 -2013年03月
- 異種酸化物半導体ナノ粒子の接合で構築した室温作動型半導体ガスセンサの開発大倉和親記念財団：平成24年度 大倉和親記念財団 学術研究助成研究期間 : 2012年04月 -2013年03月代表者 : 湯浅雅賀
- 文部科学省：科学研究費補助金(若手研究(B))研究期間 : 2012年 -2013年代表者 : 湯浅 雅賀La-Mn系ペロブスカイト型酸化物を電極触媒とした金属空気電池用空気極の酸素還元電位を向上するために、酸化物組成およびPtとLaMnO3の共担持の効果について検討を行った。LaMnO3にCa,Feを置換し、酸素還元活性を調べた結果、酸素還元活性はMnサイトの酸化数に依存する傾向にあることがわかった。また、ペロブスカイト型酸化物中のAサイト欠陥が酸素還元活性の向上に寄与している可能性が示唆された。LaMnO3ナノ粒子と微量のPtとをカーボン担体に共担持した酸素還元触媒を合成し、その特性を調べた結果、Ptが空気極の浸漬電位の向上に、LaMnO3が過電圧の削減に有効に作用することが明らかとなった。
- 科学技術振興機構：研究成果最適展開支援事業A-STEPフィージビリティスタディ【FS】ステージ探索タイプ研究期間 : 2011年04月 -2012年07月代表者 : 湯浅雅賀
- 日本板硝子材料工学助成会：平成20年度 日本板硝子材料工学助成金研究期間 : 2008年04月 -2009年03月代表者 : 湯浅雅賀
- 文部科学省：科学研究費補助金(若手研究(B))研究期間 : 2008年 -2009年代表者 : 湯浅 雅賀金属空気電池は最も理論エネルギー密度の高い電池であり、次世代のエネルギーデバイスとして注目されている。しかし現在の空気電池は、空気中の酸素を取り込む空気極が充電反応の際に腐食劣化するため、二次電池として動作しない。そこで本研究では、腐食劣化を起こさず、電極反応に高活性なLaNiO_3ナノ粒子を従来の空気極材料の代替として用いるための研究を行った。その結果、LaNiO_3が従来の材料の代替となりうることを見出し、さらに、LaMnO_3とLaNiO_3を組み合わせることで充放電可能な空気極となることが明らかとなった。